How 12-hour shift schedules (rosters) work
A day is split into two 12-hour shifts, typically 7:00 AM–7:00 PM and 7:00 PM–7:00 AM. With four teams, one works the day shift and one the night shift while two are off. Each team works 7 shifts every 14 days, so half the year is days off.
The rotations differ in two ways: whether teams switch between days and nights (2-2-3 Panama, DuPont) or stay fixed (Pitman, fixed 4 on 4 off), and how the work days are grouped — short blocks of 2–3 or longer blocks of 4.
Breaks on a 12-hour shift
There is no federal law requiring meal or rest breaks for adults. If your employer gives short breaks (5–20 minutes), they must be paid. Many states set their own rules. In California, for example, a 12-hour shift means:
- Two 30-minute meal periods — the first before the end of the 5th hour, the second before the end of the 10th. The second can be waived by mutual agreement if the shift is no more than 12 hours and the first meal was not waived. Healthcare workers have a broader waiver.
- Three paid 10-minute rest breaks — one per 4 hours worked or major part of 4 hours.
Other states with meal or rest break laws include Oregon, Washington, Colorado, Nevada, Minnesota, New York and Illinois. Check your state labor department for the exact rules.
Overtime on 12-hour shifts
Federal overtime is weekly: hours over 40 in a fixed 7-day workweek. On most 12-hour rotations you work 36 hours one week and 48 the next, so you typically earn 8 hours of overtime every other week — around 208 hours a year. Where the employer's workweek starts can change this. In states with daily overtime (such as California), hours over 8 in a day also count unless an alternative workweek schedule is in place. Work out your own numbers with the shift pay calculator.
Pros and cons of 12-hour shifts
- Pros: about half the year off, fewer commutes, longer breaks, and fewer handovers between shifts.
- Cons: long days, fatigue toward the end of a shift (especially nights), and harder childcare on work days.
See how 12-hour shifts are used by nurses and police officers.
Making a 12-hour shift roster
To turn a rotation into a roster with names, assign each team to one or more people (four people minimum for 24/7), set the cycle start date and post it four weeks at a time. Download the free 12-hour shift schedule template (pre-filled with the 2-2-3 and Pitman) or build it online.
Managing a team? Build the actual schedule with names in the schedule maker — use "Fill from rotation" to apply any of these patterns.
Frequently asked questions
What is a 12-hour shift schedule?
A schedule where each shift lasts 12 hours, usually 7 AM–7 PM (days) and 7 PM–7 AM (nights). Four teams rotate so that one works days and one works nights every day, while two are off. Most 12-hour rotations average 42 hours a week.
How many breaks do you get on a 12-hour shift?
Federal law does not require breaks. Many states do: in California, a 12-hour shift comes with two 30-minute meal periods (the second can be waived by agreement if the shift is no longer than 12 hours and the first was taken) and three paid 10-minute rest breaks. Healthcare workers in California may waive one of the two meal periods. Check your state's rules.
How many days a week do you work on 12-hour shifts?
Usually three or four. Over two weeks most 12-hour rotations have seven shifts, so you are off about half the days of the year.
What is the best 12-hour shift schedule?
It depends on what you value. The Pitman gives every other weekend off with no day/night switching; the DuPont gives a full week off every month; the 2-2-3 (Panama) spreads nights evenly; the 4 on 4 off is the simplest.
Do nurses work 12-hour rotations?
Many hospital nurses work three 12-hour shifts a week (36 hours) on a self-scheduled or fixed pattern rather than a team rotation. You can still put a regular pattern on your calendar with the custom option, e.g. DDDOOOO.
How many employees do you need for 24/7 coverage with 12-hour shifts?
At least four — one team on days, one on nights and two off each day. For more than one person per shift, multiply: 8 people gives 2 per shift.