The best schedule for any group that works 24/7 depends primarily on 2 things: (1) the workload distribution, and (2) employee preferences. The workload distribution and associated coverage requirements should be the starting point for all scheduling decisions. Starting with anything else will lead to ineffective or inefficient solutions. Read this article for a more complete explanation: https://www.shift-schedule-design.com/Blog?m8:post=the-real-purpose-of-a-shift-schedule.

Workload Distribution. If the workload is steady at all times, 8-hour or 12-hour shifts would be the best choice. If the workload varies by time-of-day, you will either need to allocate more staff to certain shifts or adopt a schedule with overlapping shifts (e.g., 10-hour shifts or combined 8 and 12-hour shifts). If the workload varies by day-of-the-week (or weekdays vs. weekends), you will need a custom-designed work pattern.

Employee Preferences. If you ask employees for their preferences, roughly 80% will say 8-hour shifts. However, if you show them examples of 8 and 12-hour schedules, 80% will prefer the 12-hour schedules. That's why it's important for them to see actual examples rather than just voicing an opinion on what they want.

There is more than just shift length to consider, of course. Should you have fixed shifts or rotating shifts (https://www.shift-schedule-design.com/Fixed_Shifts)? What are the best shift start/end times (https://www.shift-schedule-design.com/Blog?m8:post=fatigue-in-the-workplace-early-day-shift-start-times)? What's the best way to handle absence coverage (https://www.shift-schedule-design.com/Blog?m8:post=how-to-cover-absences)?

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