Custom-Designed Employee Work Schedules
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Almost every week I'm contacted by police officers, sheriff's deputies, and patrolmen about 10-hour shifts. They believe that 10-hour shifts would benefit themselves and their fellow officers. I believe there are two reasons they think 10s would be an improvement over their current 8-hour schedule. I will take a closer look at each of these in an attempt to sort out the reality from the myth.
Time Off
In 24/7 operations, typical schedules using 8, 10 or 12-hour shifts provide the following number of days and weekends off:
Shift Length Days Off Per Year Max. Weekends Off
8-hour 91 25%
10-hour 146 40%
12-hour 182 50%
It is clear that 10-hour shifts offer more days off and more weekends off than 8s, but not as many as 12s. I believe that 10s are the most popular shift length because they offer more time off than 8s and they are seen as more tolerable than 12s. If the only objective was to maximize time off, 12-hour shifts would be the clear winner.
The key point that is often overlooked is absence coverage. With 8-hour shifts, absences are covered either by holding someone over from the previous shift or by splitting the vacant shift into two 4-hour components that can be covered by the preceding and following shifts. With 10-hour and 12-hour shifts, absences must be covered by calling someone in from a scheduled day off. Many law enforcement agenices have built additional coverage into their schedules to compensate for their high absence rates. But what happens if that extra coverage isn't available? Since 10-hour shifts will reduce the available coverage by at least 25%, there won't be any extra capacity to cover absences. So, instead of getting the expected 3 days off every week, the officers might only get 1 or 2 days off.
On/Off Work Patterns
The common perception of 10-hour work patterns is 4 days of work followed by 3 days off. In 24/7 operations, however, this pattern only works if you use 6 crews and fixed days of work. This requires a lot more staff, a backwards rotation, and fixed days of work. You can read more about this approach and its shortcomings here: http://www.shift-schedule-design.com/Blog?m8:post=problems-with-free-schedule-examples
The best 10-hour schedule for 24/7 operations uses 7 crews per shift or 21 total crews. There is no built-in overtime with this schedule. It also has the most attractive work pattern (4 or 5 consecutive days of work followed by 3 or 4-day breaks). The pattern can easily be adapted for use with either fixed or rotating shifts.
If you don't have 7 officers or a multiple of 7 (14, 21, 28, etc.) per shift, your 10-hour schedule will have shorter blocks of work (two to four days) and shorter breaks (one to three days). Many officers are disappointed when they see these patterns because there are so many one and two-day breaks. These patterns are especially unattractive to anyone who is expecting to consistently get 3 consecutive days off by changing to 10-hour shifts.
Organization and Supervision
Many 8-hour and 12-hour schedules use 4 squads. Squad members work the same shift(s) and the same days of the week. 10-hour shift schedules for small organizations (less than 50 people), rarely use squads. Some days, Officer A might be working with officers C and E. On other days, he or she might be working with officers B and D, or maybe with officers G and J.
With 8 or 12-hour shift schedules, each squad usually has a sergeant or corporal who acts as the team leader/supervisor. With 10-hour shifts, in order to ensure that a supervisor is always on duty, it's necessary to put them on their own, separate schedule. This means the officers will not always be working with the same supervisor after changing to a 10-hour shift schedule.
Conclusions
10-hour shifts provide more time off than 8-hour shifts, but not as much as 12-hour shifts. The extra days off may not be realized since some of them will probably be used to cover absences. Although the schedule will provide 3 days off for most weeks, they won't always occur on consecutive days. 10-hour shifts also will change the way the group is organized and supervised. Although 10-hour shifts are clearly more attractive than 8-hour shifts, they may not live up to the high expectations that many police officers have of them. I think the shift length debate among officers should not be 8s vs. 10s, but 10s vs. 12s.
Please check out my other 10-hour blog posts, especially 10-hour shifts and Police Management. Go to the search box and type in 10 hour shifts. You really need to educate yourself about this before making a choice you might regret.
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When organizations struggle to make ends meet, overtime often becomes a target in their budget reduction plans. Although reducing overtime may be financially prudent for most departments, it is a poor choice for those that operate around-the-clock. Here's why.
The simplest and most common way to provide 24/7 coverage is with four crews. If the crews work 40 hours a week, that provides 160 hours of coverage (4 crews * 40 hours = 160 hours). The problem is that there are 168 hours in a week (24 hours * 7 days = 168 hours).
The easiest way to close the 8-hour gap is to have the four crews work a small amount of overtime (an average of two hours per employee every week). With 8-hour shift schedules, that requires three hours extra pay for each employee, or a 7.5 percent increase. With 12-hour shift schedules, that requires four hours of additional pay for each employee, or a 10 percent increase.
If an organization is prohibited from using overtime, it must choose one of the following approaches to avoid gaps in coverage:
1. Use part-time employees. Some smaller organizations can do this, though it can be a challenge to find and retain good part-time employees. With larger groups, it can be difficult to fit part-time employees into the schedule without having one shift staffed solely with part-timers. This approach will increase costs by 5 percent. Although slightly less expensive than using overtime, it has limited applicability.
2. Use more than four crews. A schedule that uses more than four crews requires a larger headcount. If an organization does this, they usually allocate some of the extra work hours to training, relief, maintenance or special projects. Even if you ignore the cost of benefits for the additional employees (usually anywhere from 40 percent to 50 percent of the wages), this approach will increase costs by at least 25 percent.
3. Use a crewless schedule. Instead of scheduling groups of personnel (i.e. crews), you could develop a schedule for each individual employee. This approach also will require more employees than a typical four-crew schedule. The number depends on: (a) the shift length, (b) whether the shifts are rotating or fixed, and (c) the number of job categories/positions involved. This can increase costs anywhere from 7.7 percent to 50 percent if you ignore the cost of benefits. In most cases, this approach will cost more than using a four-crew schedule with built-in overtime.
Although overtime is often perceived as something to be avoided (because it requires a time-and-a-half pay premium), it is not the most expensive approach for providing 24/7 coverage. Using part-time employees to supplement four full-time crews is the least expensive solution, but this is only feasible in smaller groups. So, before banning overtime, it is important to recognize that the policy will force groups that operate around-the-clock to adopt schedules that are actually more expensive.
When organizations view overtime as an expense rather than a strategic tool, they often make three major mistakes:
They staff for peak demand. In order to have enough resources on hand to respond to short-term fluctuations in demand, they over-staff instead of using overtime. Usually this is the most expensive approach.
They sacrifice customer service. Without overtime, they are unable to respond to fluctuations in demand. In short, they sacrifice customer service to avoid overtime.
They build up an inventory of excess product to have a cushion for demand variations. The cost of this inventory must be passed on to customers.
Here are three more articles on overtime.
Reasons for using overtime. Four valid reasons for using overtime are: (1) 24/7 coverage, (2) workload fluctuations, (3) staff variations, and (4) labor market considerations.
Overtime problems. High overtime, especially when it continues for an extended time period, has several potential drawbacks: (1) an overtime-dependent workforce, (2) safety and quality issues, (3) absenteeism, and (4) lower productivity.
Correcting overtime problems. To avoid overtime problems, you should regularly monitor overtime and absences. You also should understand the workload variations and take steps to improve the accuracy of your demand forecasts. Periodically, you should review your organization's overtime distribution policies to make sure they are working properly.
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Many retail and service businesses have found it necessary to stay open longer than 8 hours a day and more than 5 days a week. Examples of retailers include apparel, sporting goods, building supplies, household items, jewelers, stationers, and variety stores. Examples of service businesses include dry cleaners, pharmacies, auto repair, dentists, optometrists, and barbers/hair salons.
Reasons for expanding the hours of operation include the following:
Competition. Once a competitor changes its hours of operation, other local companies in that same line of business are pressured to do the same.
Customers. Longer hours expose a business to more prospects, which can increase sales. It also makes it more convenient for existing customers, which means more repeat business
Facilities. When the space or equipment is fully utilized, it's cheaper to increase the hours of operation than it is to rent a larger office/shop or to purchase more/larger machinery.
There are three factors that the business owners should consider when creating work schedules for the employees:
Coverage. What is the most effective way to match the number of people at work with the workload variations?
Cost. What is the most efficient way to staff and schedule the employees?
Satisfaction. Which approach will the employees prefer?
I've discussed these criteria previously, but only in the context of continuous 24/7 operations. Here's a link to the original article: http://www.shift-schedule design.com/Shift_Schedule_Design_for_Dummies. In this post, we will take a closer look at each factor from the perspective of businesses that are less than 24/7.
Coverage
Once a company selects its new hours of operation, it should estimate the workload by hour of the day and by day of the week. The best way to do this is to gather historical data using measures such as:
Number of jobs or appointments
Number of in-bound phone calls
Number of customer visits
Number of out-bound service calls
Since some calls or visits require more time and effort than others, it might be necessary to classify them into 2 or 3 categories. Each category can be weighted differently to adjust for the time required by employees. A table of the weighted data can help in the selection of shift lengths and coverage on each shift. An example is shown below. Note that Category 2 work takes twice as long at Category 1 work so it counts double in the total work volume.
Days Time Category 1 Category 2 Total
Mon-Fri 0800 to 1200 50 4 58
Mon-Fri 1200 to 1600 70 8 86
Mon-Fri 1600 to 2000 85 10 105
Sat 0800 to 1200 70 9 88
Sat 1200 to 1400 81 7 95
Sat 1400 to 1700 92 5 102
As you can see, the volume of work is not constant throughout the hours of operation. It varies by time of day and day of the week. Let's take a closer look at each of these two types of workload fluctuations.
Hourly Variations. With this type of fluctuation, the volume of work changes by time of day. For example, the evenings are often busier than the rest of the day in many retail stores. The three typical ways to address these hourly workload variations are:
Staggered start times
Part-time employees that work shifts shorter than 8 hours
Multiple shifts that overlap one another
Since there are so many different situations, I'll try to give a simple example of each approach.
Example #1. An independent auto repair shop is open from 7 a.m. to 6 p.m. It opens early because the owner wants to avoid commuter traffic. Most customers don't drop off their cars until 8 or 9 a.m., so he starts one mechanic at 8 a.m. and another at 9 a.m. The first mechanic leaves at 4:30 p.m. and the second leaves at 5:30 p.m. The owner stays until 6:00 p.m. to accommodate customers picking up their vehicles after work. The staggered work hours not only extend the coverage to 11 hours a day, but they also match the coverage with the workload.
Example #2. A store that sells bicycles is open from 9 a.m. to 7 p.m. They are busiest from 4 p.m. to 7 p.m. To match the coverage with this workload distribution, they have a 10-hour shift staffed by full-time employees plus a 3-hour shift (from 1600 to 1900) staffed by part-time employees (mostly students).
Example #3. A beauty salon is open from 9 a.m. to 9 p.m. Their busiest time of day is in the afternoon from 3 p.m. to 5 p.m. They match this workload distribution by using two 8-hour shifts (0900 to 1700 and 1300 to 2100). The shifts overlap from 1 p.m. to 5 p.m. This overlap is a little longer than necessary, but it allows the company to only use full-time employees who want to work 8-hour shifts.
Daily Variations. With this type of fluctuation, the volume of work changes throughout the week. For example, many businesses that deal with the public are busier on the weekends than they are on weekdays when people are at work. The two typical ways to address daily work variations are:
Weekend crews
Custom-designed work patterns
As with the hourly variations, there are too many possibilities to cover them all, so I'll just give one example of each approach.
Example #4. A stationery store is open every day of the week. The workload is fairly light on weekdays and busier on the weekends. The owner works by himself Mon-Fri. He employs several part-time people to work the weekend shifts. It's easier for him to find people to work weekends since this is usually a second job for them. Plus it gives him the weekends off. The downside, of course, is that the manager is unavailable to supervise the part-time employees. He or she is also unavailable when the store is busiest.
Example #5. A pharmacy is open every day of the week. They tracked the volume of prescriptions filled by day of the week. Wed, Thu and Fri have almost 50% more prescriptions than other days of the week. Weekends are the lightest, whereas Mon and Tue are average. The pharmacy employs 3 full-time pharmacists. All 3 pharmacists work the 3 busy days. Only one pharmacist works on Saturday and Sunday. Two pharmacists work on Mon and Tue.
Cost
Small business owners are especially concerned with keeping costs at a minimum. That's why it's important to compare the cost of different staffing/scheduling approaches before picking one. I'll try to illustrate how to do this.
This example is a retail store that is open from 10 a.m. to 6 p.m. Mon – Sun. Using data on the number of customer visits by hour of the day over the past year, the manager established the following coverage requirements:
Mon-Sun 1000 to 1500 2 people per hour
Mon-Sun 1500 to 1800 3 people per hour
Approach #1. This approach emphasizes the use of full-time employees supplemented by part-timers. There are 3 full-time employees that provide 2-person coverage throughout the week using 8-hour shifts. There are 3 part-time employees that are used to boost the coverage from 3 – 6 p.m. The total cost is calculated below:
3 FT employees * 40 hours/week * $12/hour wages * 1.4 cost of benefits = $2,520 per week
PT employees * 21 hours/week (average) * $10/hour wages = $210 per week (note that it doesn't matter how many part-time employees are used; it's only the total hours per week that's important)
The total cost is $2,730 per week.
Approach #2. This approach emphasizes the use of part-time employees with two full-time employees who will supervise the part-timers. The total cost is calculated below:
2 supervisors* 40 hours/week * $15/hour wages * 1.5 cost of benefits = $1,800 (note that the supervisors' time counts toward the coverage requirements)
PT employees * 53 hours/week * $10/hour wages = $530 per week (note that it doesn't matter how many part-time employees are used; it's only the total hours per week that's important)
The total cost is $2,330 per week.
Based on cost alone, Approach #2 (supervisors + part-time workers) is the best. The owner has to balance the cost savings with the time the manager will spend hiring and training the constant turnover of part-time employees. Although using part-time employees often is the least expensive approach, other considerations may override this.
Employee Satisfaction
Although employee satisfaction is important, it should never be the starting point in the search for a new schedule. I can't count the number of times I've been contacted by managers who selected the hours of operation to justify a shift length that he or she thought employees would like better than 8-hour shifts. They often forget that longer shifts will either increase the staffing requirements or reduce the available coverage.
For example, I had a manager of a business that ran 16 hours a day (two fixed 8-hour shifts) for 7 days a week. They needed 2-person coverage. They used 6 employees working an average of 37.33 hours/week. The manager said the employees were unhappy with the schedule, so he was thinking about changing to two 10-hour shifts.
The problem with two fixed 10-hour shifts with 2-person coverage is that it would require 8 employees or the coverage would drop to 1 person for 2 days a week on each shift. The manager forgot that the extra 2 hours a day for the 10-hour shifts would increase the hours of coverage by 25%.
In most cases, shift length is not left up to employees since this is more or less defined by the hours of operation or the hours in which overlapping shifts are needed. So the choice for employees usually boils down to the preferred work pattern. Here are a couple of examples.
Example #6. A hardware store needs 4 sales people on a 10-hour shift every day of the week. This requires 7 employees working 40 hours a week. To reward the most senior employees, the manager lets them bid on the days they work. He creates two schedule options:
Option #1. This schedule has 4 consecutive days of work followed by 3 consecutive days off. The downside to this schedule is that only 2 of the 7 will get both Sat and Sun off.
Option #2. This schedule allows 3 of the 7 to get both Sat and Sun off. However, not all of the schedules feature consecutive days of work.
Example #7. An appliance repair center needs 5 people on an 8-hour shift every day of the week. This requires 7 employees working 40 hours a week. The manager creates two schedule options:
Option #1. This schedule requires employees to work 7 days in a row. The employees get 2 weekends off every 7 weeks. One weekend off is 3 days and the other is 5 days. All the other breaks at 2 days.
Option #2. This schedule requires employees to work 2 to 4 days in a row. The employees get 2 weekends off every 7 weeks. Both are only 2 days off. The other breaks are only 1 or 2 days.
In both examples, the employees are shown the two schedules. They discuss the options, particularly the pros and cons. They then vote on the option they prefer. This forces them to make tradeoffs. In Example #6, they must choose the increased likelihood of getting a weekend off. In Example #7, they must choose between more consecutive days of work with longer breaks vs. fewer consecutive days of work with shorter breaks.
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When managers need a new shift schedule for their group, they usually start by searching the Internet for:
Free examples of popular schedule patterns (e.g., 2-3-2, DuPont, or 4-on-4-off)
Information about certain shift lengths (e.g., 10-hour or 12-hour shifts)
In larger organizations (50+ employees), this is not the best approach because:
They are not involving the employees. The best way to gain support for a new schedule is to involve employees in the selection process.
They are not considering multiple options. Employees will view the schedule as something forced on them by management.
They often fail to revise the organization's pay-related policies to match the new schedule. This can be a costly mistake.
In smaller organizations (<50 employees), this is not the best approach because:
The schedule may not be a good fit with their staff size. Most schedules rely on 4 crews. When organizations have a staff that's not a multiple of 4, the four crews won't be the same size which means the coverage will be inconsistent.
The schedule may not match their workload distribution. Most popular schedules assume constant coverage around-the-clock. If the workload is lighter on the night shift or on the weekends, the shifts will be overstaffed. Scheduling people to work when they aren't needed is an expensive way to use personnel.
The schedule may not make the most efficient use of their resources (staff and overtime).
They are not considering different approaches or options.
The schedule may be intended for a different overtime/pay week.
So why do they do this? I believe there are four reasons:
They forget that the true purpose of a schedule is to deploy the staff effectively and efficiently, not to force the organization to adapt to a popular work pattern.
They don't realize the value of a schedule that is matched to their specific resources and requirements.
They aren't aware of the importance of involving employees in the selection process.
They don't understand the value in paying for scheduling help.
Custom-designed schedules from Shift Schedule Design are matched to the organization's staff size, business requirements, and schedule preferences. This means you get:
Benefits. Make optimal use of your resources:
Match the coverage with the workload during all your hours of operation.
Consistently achieve or exceed the minimum coverage requirements.
Make the most efficient use of your staff and overtime.
Increase employee satisfaction by maximizing weekends off.
Quick turnaround. Get multiple options in 2 days or less.
Money-back guarantee. If you can find a better schedule in the following year, we'll refund your money ("better" is defined as meeting all four of the above criteria).
What you avoid. Hours or days spent searching for free schedules. Forced to choose from only one or two options. Schedules that don't deploy your employees effectively. Schedules that increase operating costs by not using your resources efficiently. Schedules that don't maximize weekends off.
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Today, we're going to look at employee work schedules at a car dealership. The manager of this dealership runs the sales department 7 days a week for 12 hours a day (8 a.m. to 8 p.m.). He runs the parts department, service writers, and mechanics for 10 hours a day (8 a.m. to 6 p.m.) on Mon-Fri, but wants to add Saturday. He doesn't need a schedule for the administrative staff since they work 8 hours a day Mon-Fri.
Like many dealers, he hasn't kept data on the volume of customers by time of day or day of the week. He says the volume fluctuates too much, though it's always busier on weekends. He wants at least 2 salespeople during the week and 3 or 4 salespeople on the weekends. For parts and service writing, he wants 2 people Mon-Sat. For mechanics, he wants 6 people Mon-Sat.
Salespeople
The current schedule for the sales people consists of fixed 8-hour shifts with fixed days of work. Eight salespeople needed to do this: four on days (Employees A, B, C, and D) and four on afternoons (Employees E, F, G, and H). The schedule is shown below. Employee A works the day shift (d8) from 8 a.m. to 4 p.m. every Saturday through Wednesday, Employee B works the day shift Thursday through Monday, and Employee F works the afternoon shift (a8) from 12 noon to 8 p.m. every Thursday through Monday.
Current Schedule
Employee
Sat
Sun
Mon
Tue
Wed
Thu
Fri
Hours
A
d8
d8
d8
d8
d8
-
-
40
B
d8
d8
d8
-
-
d8
d8
40
C
d8
d8
d8
d8
-
-
d8
40
D
d8
d8
-
-
d8
d8
d8
40
E
a8
a8
a8
a8
a8
-
-
40
F
a8
a8
a8
-
-
a8
a8
40
G
a8
a8
a8
a8
-
-
a8
40
H
a8
a8
-
-
a8
a8
a8
40
Average
40
Key:
d8 = 8-hour day shift (8am-4pm)
a8 = 8-hour afternoon shift (12pm-8pm)
Coverage:
Sat
Sun
Mon
Tue
Wed
Thu
Fri
8a - 12p
4
4
3
2
2
2
3
12p - 4p
8
8
6
4
4
4
6
4p - 8p
4
4
3
2
2
2
3
The resulting coverage is shown above. It produces higher coverage on the weekends, but it has a 4-hour overlap that is unnecessary. If 12pm to 4pm was a particularly busy period, the overlap would be great. But this isn't a particularly busy time of the day for sales.
Do the employees like this schedule? Well, they like working the same shift and the same days all the time, but they hate never getting a weekend off.
We were able to convince the manager that 12-hour shifts would be a better choice. Here's the schedule we designed.
Proposed Schedule
Emp. / Week
Sat
Sun
Mon
Tue
Wed
Thu
Fri
Hours
A / Week 1
D12
D12
D12
-
-
-
-
36
B / Week 2
D12
D12
-
-
D12
D12
-
48
C / Week 3
-
-
D12
D12
-
-
D12
36
D / Week 4
D12
D12
-
-
D12
D12
-
48
E / Week 5
D12
D12
D12
-
-
-
-
36
F / Week 6
-
-
-
D12
D12
-
D12
36
G / Week 7
D12
D12
-
-
-
-
D12
36
Average
39.4
Key:
D12 = 12-hour day shift (8am-8pm)
Coverage:
Sat
Sun
Mon
Tue
Wed
Thu
Fri
8a - 8p
5
5
3
2
3
2
3
With this schedule, all the employees are on the same shift, but they work different days each week. This is called a fixed shift schedule with rotating days of work. Each employee starts in the week shown. After finishing this initial week, they rotate to the next week of the schedule. Employee A moves from Week 1 to Week 2, B moves from Week 2 to Week 3, and so on. Employee G moves from Week 7 up to Week 1. All the sales people would work the same 7-week pattern. It's just that they would be in different weeks of that pattern.
Unlike the current schedule with 8 salespeople, only 7 salespeople are needed with the 12s. The coverage is better too. The 4 hours of overlapping shifts is eliminated and they would have 5 people working both Saturday and Sunday instead of 4 people. The employees should be happier as well. They would get 2 weekends off every 7 weeks (weeks 3 and 6 of the schedule). There are also two 4-day breaks (Weeks 1 and 7) and one 7-day break (Week 5 into Week 6).
Parts, Service Writers, Mechanics
The current schedule for these three positions is Monday to Friday for 10 hours a day (8 a.m. to 6 p.m.). The manager organized them into 3 teams, with each team consisting of 1 Parts Person, 1 Service Writer, and 3 Mechanics.
Current Schedule
Team
Sat
Sun
Mon
Tue
Wed
Thu
Fri
Hours
A
-
-
-
D10
D10
D10
D10
40
B
-
-
D10
D10
D10
D10
-
40
C
-
-
D10
D10
-
D10
D10
40
Average
40.0
Key:
D10 = 10-hr day shift (8am-6pm)
Coverage:
Sat
Sun
Mon
Tue
Wed
Thu
Fri
8a - 6p
2
3
2
3
2
Team A worked the 10-hour shift Tue-Fri, Team B worked it Mon-Thu, and Team C worked it Mon-Tue and Thu-Fri. The biggest problem was that all 3 teams worked every Tuesday and Thursday - which are not busy days. Employees liked the schedule, though Team C complained that they didn't get a 3-day weekend off like the other teams did.
We created a new schedule for Mon-Sat coverage with rotating days of work so that the employees wouldn't get stuck working every single weekend. Here's what we designed.
Proposed Schedule
Team / Week
Sat
Sun
Mon
Tue
Wed
Thu
Fri
Hours
A / Week 1
D10
-
D10
D10
-
D10
D10
50
B / Week 2
D10
-
D10
D10
D10
-
-
40
C / Week 3
-
-
-
-
D10
D10
D10
30
Average
40.0
Key:
D10 = 10-hr day shift (8am-6pm)
Coverage:
Sat
Sun
Mon
Tue
Wed
Thu
Fri
8a - 6p
2
2
2
2
2
2
Without adding any staff, we rearranged the pattern so 2 teams were working every day from Mon-Sat. The only sacrifice was one 50-hour work week and one 30-hour work week. This could be resolved by moving the Tue shift in Week 1 to Week 3, however, that would leave the Mon shift in Week 1 sitting out there all by itself. This is poor scheduling because it encourages employees to call in sick or take vacation on that day to bridge the time off before and after that day.
The advantages of this new schedule are that it uses the same number of employees, but adds Saturdays and gets rid of the extra coverage on Tue and Thu. The manager was extremely pleased with this, since he got what he wanted for a small price – the overtime for one team every week (though this was offset partially by the 30-hour Week 3).
The employees didn't like the idea of rotating and working Saturdays, but they did like getting a 6-day weekend off every 3 weeks.
Conclusions
Sometimes it helps to have an outsider take a fresh look at your business, and especially your employee work schedule. The manager of this dealership would have lived with ineffective schedules and incurred unnecessary costs for years if he hadn't decided to expand the coverage to include Saturdays and contacted us for assistance.
We showed him how to improve the sales coverage and to do it with fewer people. We showed him how to add Saturday coverage for Parts, Service Writers, and Mechanics without adding more staff. In most cases, the employees were happy with the changes. They resisted the change to schedules that rotated the days of work, but they liked the longer breaks and opportunities for weekends off.
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“We work 24/7 and we want to change to 10-hour shifts. Can you help us?” How many times have I heard that? At least 2-3 times a week. Yeah, 8-hour shift schedules suck. You might want to read about them here:
· 8-Hour Rotating Shifts (shift-schedule-design.com)
· 8-Hour Fixed Shift Schedules (shift-schedule-design.com)
The problem is that few companies have enough resources to make the change to 10-hour shifts. If you are simply replacing your three 8-hour shifts with three 10-hour shifts, your coverage will be reduced by 25%. For example, if your current 8-hour schedule produces 4-person coverage, a new 10-hour schedule would reduce that to 3-person coverage.
Why is that? Let’s look at a simple example with rotating shift schedules. Here’s a popular 8-hour pattern called the Continental.
8-Hour Shifts
Crew / Week
Thu
Fri
Sat
Sun
Mon
Tue
Wed
Hours
A / Week 1
-
-
D8
D8
A8
A8
N8
40
B / Week 2
N8
N8
-
-
D8
D8
A8
40
C / Week 3
A8
A8
N8
N8
-
-
D8
40
D / Week 4
D8
D8
A8
A8
N8
N8
-
48
Average
42
Key:
D8 = 8-hour day shift
A8 = 8-hour afternoon shift
N8 = 8-hour night shift
This is a 4-week, rotating schedule operated by 4 crews. When the schedule first starts, the crews are assigned to specific weeks in the cycle. Crew A is assigned to start in Week 1, Crew B is assigned to start in Week 2, and so on. At the end of each week, the crews rotate down to the next week in the cycle. Crew A moves to Week 2, Crew B moves to Week 3, etc. When a crew completes the 4th week, they rotate up to Week 1.
Yes, this is a terrible schedule to work. You work 7 shifts in a row and you have to change shifts every 2-3 days. Worst of all, you only get one weekend off every 4 weeks.
You'll notice that there is a D8, A8, and N8 under each of the days of the week. This means one crew is scheduled to work each shift, all week long. Maybe not the same crew, but there will always be one crew scheduled for each shift. If the total staff is 16 people, each crew would have 4 employees. That means there would be 4 people at work at all times on a 24/7 basis.
Now let's see what happens if you change to a 10-hour rotating shift schedule.
10-hour Shifts
Crew / Week
Thu
Fri
Sat
Sun
Mon
Tue
Wed
Hours
A / Week 1
-
D10
D10
-
-
D10
D10
40
B / Week 2
D10
-
-
D10
D10
-
A10
40
C / Week 3
A10
A10
-
-
A10
A10
-
40
D / Week 4
-
-
A10
A10
-
N10
N10
40
E / Week 5
N10
N10
N10
N10
N10
-
-
50
Average
42
Changing to 10-hour shifts requires creating a 5th crew and it doesn’t get rid of the overtime in the schedule. There are better patterns than this one that would give you 2 weekends off every 5 weeks. I can show you options that do this, but not for free.
Since the staff size (16) hasn't changed, four of the crews will only have 3 people and one will have 4 people. This means the coverage will now be only 3 instead of the 4 you had with the 8-hour shifts.
The positives of the 10-hour schedule for employees are that you get more days off (3 days a week for 4 out of 5 weeks) and more weekends off (up to 2 weekends off every 5 weeks). Negatives are the smaller breaks and the change in absence coverage.
With 10-hour shifts, you can't hold people over to cover an absence like you did with 8s. Absences have to be covered by calling people into work who are scheduled to be off. As an employee, you could end up working 5 or more shifts a week depending on the absence rate and whether you had any extra capacity before making this change.
The key question of course is whether it’s worth switching to 10-hour shifts. Increasing the average hours of work by 25% or hiring 25% more employees is hard to justify. Reducing the coverage by 25% is not a good choice either. Would the employees benefit that much? Maybe, maybe not. I find it pretty hard to justify.
Don’t get me wrong. I’ve written plenty of articles about how to use the 6 hours a day that 10-hour shifts overlap to match the coverage to a variable workload. 10-hour shifts do have a place, if you can afford it. It’s been my experience that few smaller organizations (less than 50 employees) can do it.
Here is another article about 10-hour shifts with links to several of the other articles I've written on this topic: 10-hour Shifts.
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If you've searched my website for articles about 10-hour shifts, you'll see that I have a pretty negative opinion toward them in 24/7 operations. Here are links to some of those articles:
10-Hour Shifts in 24/7 Operations (shift-schedule-design.com)
10-Hour Shifts for 24/7 Coverage (shift-schedule-design.com)
10-Hour Shift Schedules and Police Management (shift-schedule-design.com)
10-Hour Shift Schedules for Police Officers (shift-schedule-design.com)
Most of the issues I raise are management concerns, like the fact that 10-hour shifts require at least 25% more staff than 8 or 12-hour shifts. Nevertheless, employees tend to believe that 10-hour shifts are the ideal shift length. They would do anything (maybe including a pay cut) to get them. Since employees love them so much, maybe it's worth the extra cost. After all, wouldn't it be great to have a happy, enthusiastic workforce?
The table below shows the staff needed to different levels of coverage:
Coverage per Shift
Staff Required on Each Shift
Total Staff Required
Avg. Weekly Hours
1
2
6
40
2
4
12
40
3
5
15
42
4
7
21
40
5
9
27
40
Coverage levels greater than 5 would either be a multiple of one of the levels shown or it would require a custom-designed schedule. For example, 6-person coverage would use a schedule for 3-person coverage, whereas 7-person coverage would require a custom-designed schedule.
With some of these coverage levels, the schedule would have one or two overlapping days. This will produce more coverage than needed. This is necessary to ensure 40-hour work weeks. You can only avoid this by having an occasional 30-hour work week, which few employees would tolerate.
3-person coverage is the only level that would require some overtime in the schedule (a 50-hour work week once every 5 weeks). If you want to avoid the OT, you'd have to employ 6 people per shift or 18 total employees. I don't think it's worth it, but that's your call.
Want to see a few templates for your coverage requirements? You won't find these elsewhere on the Internet. They have to be custom-designed. Please fill out this form to get an idea of what we would provide and how much we would charge:
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Higher-ranking law enforcement personnel (e.g., Police Chiefs, Sheriffs, Captains, and Lieutenants) tend to look at 10-hour shifts in a different way than their subordinates do. They are well aware of the popularity of 10-hour shifts among the officers/deputies, but often are unable to adopt them due to resource constraints. Let's look at the major considerations in the change to 10-hour shifts from the management perspective.
Overtime
Since four 10-hour shifts add up to 40 hours a week, some people believe 10-hour shifts will eliminate overtime from the work schedule. Unfortunately, this is not always the case as shown below:
24/7 Coverage
Crews Needed
Schedule Format
Average Workweek
1 crew
5
Rotating shifts
42
1 crew
6
Fixed shifts
40
2 crews
5
Rotating shifts
42
3 crews
15
Either
42
4 crews
21
Either
40
A crew can consist of one to hundreds of officers. Unlike many 8 or 12-hour shift schedules that require 4 crews, 10-hour schedules require 5 or more crews. For example, to have 1-person coverage around-the-clock, you need 5 people if you use rotating shifts and 6 people if you use fixed shifts. To have 2-person coverage, you would need 10 people (5 crews of 2 each) with rotating shifts and 12 people (6 crews of 2 each) with fixed shifts.
The most common 10-hour schedules rely on 5 or 15 crews. These schedules average 42 hours a week, the same as most 8-hour and 12-hour schedules that use 4 crews. I occasionally get calls from Police Captains and Lieutenants who have tried to create a schedule on their own, but can't make it work. They didn't realize that the schedule needed an occasional 50-hour work week or that it required more crews. Overtime is unnecessary only when the schedule is comprised of 6 crews or 21 crews (and sometimes with a crewless schedule).
Overlapping Shifts
A schedule that uses three 10-hour shifts will have 6 hours a day in which the shifts overlap one another. There are two common ways to use the overlaps:
Overlap each shift by two hours. Officers on the out-going shift can do their paperwork while officers on the in-coming shift are out on the street. This ensures continued coverage throughout the day. This approach tends to be preferred by the officers.
Align the overlapping shifts with the busiest period of the day. Coverage can be boosted for 6, 12 or 16 hours a day depending on how the shifts are scheduled. I recommend this approach because the primary reason for having a schedule is to allocate the resources to match the workload. The downside is that it often requires unusual shift start/end times. This approach tends to be preferred by management.
Coverage Reduction
The biggest problem with 10-hour shifts is that they require more resources than 8-hour or 12-hour shifts. A 10-hour schedule requires more staff because the officers are working 30 hours a day (three 10-hour shifts). This will either require 25% more personnel or a 25% reduction in the coverage levels. In most cases, headcounts are frozen, so the impact is reduced coverage on each shift.
Even if sufficient staff is available, they are usually needed for other purposes such as absence coverage. Since the absence rates in most police departments are rather high, most Chiefs opt to use any “extra” staff in one of two ways:
Increase coverage levels above the minimum. For example, a department needs a minimum of 3 officers on each shift. This requires at least 12 officers working an average of 42 hours a week. They use their staff of 16 officers to provide 4-person coverage. This allows for up to one absence on each shift.
Build relief coverage into the schedule. This is often more efficient than increasing the coverage on each shift. For example, the same department only has 14 officers, so they adopt a 14-week rotating shift schedule in which 2 of the 14 weeks are devoted to relief coverage. This requires fewer staff and provides more flexible absence coverage.
When the "extra" coverage is lost, absences (like vacations, sick time, training, court time, etc.) will have to be covered using overtime. This is the most common reason for rejecting the switch to 10-hour shifts. This is such an important point that I have to repeat it. Adopting 10-hour shifts will reduce the coverage on each shift (except for the periods of overlapping shifts). Since part of this coverage provides a cushion for absences, the 10-hour shifts will result in much higher levels of overtime.
Absences
Some people believe that 10-hour shifts will reduce absences. Since the longer shifts provide one additional day off each week, this time can be used for doctor's appointments or other personal business. I am not aware of any studies that confirm this, but it seems possible. The Shift Length Experiment prepared by the Police Foundation did not report any significant reductions in sick leave when switching to 10s (http://www.policefoundation.org/publication/shift-length-experiment/). If there is an impact, it is undoubtedly small.
Conclusions
10-hour shifts are universally popular with the officers. Chiefs or Sheriffs are aware of this, but lack of resources to make the change. From what I've seen, it's primarily the larger departments that have adequate resources to adopt 10s. Smaller departments (less than 30 officers) rarely have enough personnel.
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One of the most popular 12-hour police schedules is the 2-3-2 pattern, also known as the Pitman (or sometimes Pittman) schedule. The reason for its popularity is you only have to work 2 or 3 days in a row and you get every other weekend off as a 3-day weekend. No wonder so many people think it's the best. But you probably didn't know that there are some big downsides to this pattern for the night shift.
Let me explain.
Most people working the night shift tend to stay awake during the daytime on their days off (roughly 75% of the people on 12-hour shifts and 50% on 8-hour shifts). With the 2-3-2 pattern, this means that every 2 or 3 days, people are flip-flopping when they sleep. This can be really tough on sleep and alertness. In fact, it's even worse than most rotating shift schedules that rotate on a weekly basis.
Another problem with the Pitman has to do with the organization's overtime/pay week, since that dictates what days you get off for the weekend. If your pay week begins on Mon, Wed, or Fri, the 3-day weekend will be Sat, Sun, Mon instead of Fri, Sat, Sun. For the night shift, this means you have to work Friday night, so it really doesn't feel like you're getting the whole weekend off.
If your schedule has fixed shifts, I recommend that each shift select it's own pattern. This way the day shift can work the Pitman while the night shift can work something else that is better for alertness and safety. The best choice on the night shift is the 4-on-4-off shift schedule. That's because there are fewer changes from work-days to off-days, meaning a slower rotation of when people sleep. Other 12-hour patterns lie somewhere in between these two extremes: Pitman and 4-on-4-off.
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Most people think of work schedules as merely an on-off pattern for a specific shift length, for example, a 5-on-2-off pattern for 8-hour shifts or a 2-3-2 pattern for 12-hour shifts. While it's true that the work pattern and shift length are essential components of the schedule, they are not necessarily the most important and definitely not the best place to start the search for a new schedule. What? How can I say that? Let me explain.
When people search for a new schedule, they often forget about its primary purpose. It's not to give employees 40 hours a week. It's not to give employees more days off each week or more weekends off. No. The schedule is there to make sure the organization always has the right number of people at work. Let me re-emphasize that point: the primary purpose of the schedule is to match the coverage with the workload.
In smaller organizations where the workload isn't constant (e.g., it's lower at night or on the weekends), it's critical to schedule more employees to work when it's busy and fewer employees to work when it's slow. I can't tell you how many times I've had inquiries in which the person says they need 3 people for 16 hours and 1 person for 8-hours a day, but they wanted to change to 10 or 12-hour shifts. When I try to explain that these longer shifts don't match their workload distribution, they get indignant and say something like, "The employees are unhappy with the current schedule, so we're looking for a schedule that will give them more days off. If you can't help us, we'll find someone who can."
This may not be an issue for large companies that have a steady workload around the clock. But with smaller organizations (less than 50 employees), it's often critical. And it applies to a variety of industries. You'd be surprised to hear the types of businesses that I've recently done schedules for - restaurants, auto dealers, and hair stylists. These are not typical shiftwork operations. Yet they all need to align their staff with the changing volume of work, whether it changes by hour of the day or by day of the week (or both).
Let's take a closer look at a simple example: the mechanics at an auto dealer. Their service department is open 6 days a week (Mon-Sat) from 7 a.m. to 5 p.m. (10 hours a day). There were 15 mechanics altogether. The workload is highest on Friday and Saturday. I assigned the staff to 5 crews of 3 each. Here is one of the schedules I came up with:
Here's how it works. Team A is initially assigned to Week 1 of the schedule. They work 10 hours on Monday through Thursday that first week. When that week is done, they drop down to the second week of the schedule. For this second week, they work 10 hours on Wednesday through Saturday. They then begin the 3rd week of the schedule, followed by the 4th and 5th weeks. Once the 5th week has been completed, they go back to Week 1 and start the 5-week pattern over again. All 5 teams are working the same schedule; they are merely in different weeks of that pattern.
The mechanics will naturally be most concerned with the schedule features listed below the schedule. As you can see, they will get one full weekend off every 5 weeks. They will have to work a maximum of 4 consecutive days. They will get 5 days off in a row (Week 1 into Week 2). Several times over the 5-week cycle, they will only get 1-day breaks (Sundays). Although they don't get many weekends off, they do get more days off than they would with an 8-hour schedule.
The manager's primary concern is the coverage that the schedule produces. Three teams (9 mechanics) are scheduled to work Mon-Thu and four teams (12 mechanics) are scheduled to work Fri-Sat. We could have shifted more coverage to the two busy days, but the manager wanted the mechanics to have at least one weekend off. He was not happy with the 5-day break, since that would leave unfinished repairs for too long and the employees might forget what work they had completed in the prior week. To satisfy this concern, I revised the schedule by rearranging the weeks so that the longest break was only 3 days in a row.
The key point of this example is to demonstrate the importance of starting the schedule design by examining the workload and coverage requirements rather than starting with a desired shift length and work pattern. Had we started with a 4-on-3-off pattern, the schedule might have looked like this:
Unlike the previous schedule, the teams don't rotate to a different set of days each week. Instead, they always work the same 4 consecutive days and get the same 3 days off. This is great for Team A, which gets a 3-day weekend off, but not so great for the other four teams that have to work every Saturday. Most people probably would tolerate this because they are getting 3 consecutive days off. The big loser with this schedule is the organization. Although there are sufficient mechanics working on Fri and Sat, there is only one team working every Mon and Tue, and 5 teams every Wed and Thu. No matter how you juggle the weeks or the patterns around, you can't avoid problems with the coverage.
If you start the schedule selection process with a specific work pattern in mind, the resulting schedule may be acceptable to employees but detrimental to the organization. In our example, the organization would have been understaffed 2 days a week and overstaffed 2 days a week. If you start the process with the coverage requirements and use rotating days of work, you can optimize the coverage and give employees a decent schedule that treats everyone equally. In our example, the coverage was perfectly matched to the workload and the employees all get one long weekend off every 5 weeks.
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