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Rotating shift schedules: what they are and how the common patterns compare

A rotating shift schedule moves workers through different shifts, usually days and nights, on a repeating cycle, so a 24/7 operation stays covered and no one is stuck on nights for good. The five patterns below all use four crews and average 42 hours a week.

PatternShiftCycleAvg weekMax on / off
2-2-3 schedule: how the rotation works, with a calendar12 h28 days42 h3 / 3
DuPont schedule: the 4-week rotation, with an example calendar12 h28 days42 h4 / 7
Pitman schedule: the 14-day, 12-hour rotation explained12 h14 days42 h3 / 3
4 on 4 off schedule: four 12-hour shifts, then four days off12 h16 days42 h4 / 4
Swing shift schedule: evening hours and the southern swing rotation8 h28 days42 h7 / 3

A rotation only says who is on shift. Describe your team, roles, time-off and rules in plain English, and Smeno drafts a full schedule from that starting point, free. Check the draft before you share it. Try Smeno free

What are rotating shifts?

On a rotating schedule, people change shifts on a fixed cycle: a block of day shifts, some days off, a block of nights, and so on. On a fixed schedule, the same person always works the same shift.

Rotations exist because some work never stops: hospital units, police patrol, plants that can't shut down overnight. Rotating spreads nights and weekends across the whole team instead of leaving them to a few people.

Why most 24/7 rotations average 42 hours a week

A week has 168 hours. If one crew must be on duty at every hour and four crews share the load, each crew covers 168 ÷ 4 = 42 hours a week on average. That's why DuPont, 2-2-3, Pitman, 4 on 4 off and the southern swing all land on 42, even though they look nothing alike week to week.

The average hides the swings. Depending on the pattern and where the calendar week starts, a crew can work 36 hours one week and 48 the next, or 72 in one week and none the next.

How rotations differ

Once the crew count and the 42-hour average are fixed, patterns differ on a few things you can check in any schedule:

  • Shift length: two 12-hour shifts a day (DuPont, 2-2-3, Pitman, 4 on 4 off) or three 8-hour shifts (southern swing).
  • Longest stretch of work: 3 shifts in a row on Pitman and 2-2-3, 4 on DuPont and 4 on 4 off, 7 on the southern swing.
  • Longest break: 7 days on DuPont, 4 days on 4 on 4 off, 3 days on 2-2-3, Pitman and the southern swing.
  • Rotation direction: forward (day, then evening, then night) or backward. NIOSH notes that forward rotation is easier to adjust to.
  • Rotation speed: NIOSH calls weekly rotation the hardest speed to adjust to and suggests avoiding it.
  • Fixed or rotating crews: in a fixed Pitman schedule, night crews stay on nights.

Pattern names are not standard

The same rotation goes by different names, and the same name can mean different rotations. Some sources treat 2-2-3, Panama and Pitman as one schedule; others describe Panama as a separate 56-day cycle. Pitman is also written as 2-3-2. "Southern swing" gets attached to more than one 8-hour pattern.

Before you adopt a pattern, write out one crew's days on and off for a full cycle and count the shifts. The sequence is what matters, not the label.

FAQ

What are rotating shifts?

Rotating shifts are a schedule where employees change between shifts, such as days and nights, on a repeating cycle. They are used where work runs around the clock, so night and weekend work is shared across the team instead of falling on the same people.

What is the best rotating shift schedule?

There is no single best one. DuPont gives 7 days off in a row but has a 72-hour week. Pitman and 2-2-3 cap work at 3 days in a row but never give more than 3 days off. 4 on 4 off is the simplest to remember. The southern swing uses shorter 8-hour shifts but runs 7 days in a row.

What is the difference between rotating and fixed shifts?

On fixed shifts, each person always works the same hours, for example nights only. On rotating shifts, people move between day and night (and sometimes evening) shifts on a set cycle.

How many crews do you need for 24/7 coverage?

With 12-hour shifts or 8-hour shifts, most 24/7 rotations use four crews: at 42 hours a week each, four crews add up to the 168 hours in a week. Multiply by the number of people you need on each shift, then add slack for vacations and sick days.

Do rotating shifts pay more?

Not by law. The US Fair Labor Standards Act does not require extra pay for night or weekend work; a shift differential is up to the employer or a union contract. Overtime still applies to non-exempt workers for hours over 40 in a workweek.

Are rotating shifts bad for your health?

NIOSH links shift work to poor sleep, metabolic disorders, depression and a higher risk of accidents. It recommends forward rotation, at least 11 hours between shifts, avoiding weekly rotation, and scheduling some weekends off.

Related rotations

Sources