4-on / 4-off, 12-Hour Shifts

Four twelve-hour worked days then four days off — 48 hours in the eight-day cycle.

Definition

Days on

4

Days off

4

Shift length

12 hours

Cycle length

8 days

Hours from that definition

Worked hours per cycle

48 hours

Average worked hours per week

42.0 hours

Average worked hours per day in the cycle

6.0 hours

Work out your own numbers

The figures above follow from the day counts in the definition. For your own numbers — a different shift length, a different number of weeks — use the rotation hours planner, the shift hours calculator, or the hours in a year calculator.

This page states a rotation definition and the arithmetic that follows from it. It carries no figure from a public record, and no claim about who works the pattern, what an agreement calls it, or how any law treats it.