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INThe 3 On 3 Off Shift Pattern: Rotation, Examples & Template
The 3 on 3 off shift pattern has teams work three consecutive 12-hour shifts followed by three days off, repeating every 6 days. Four teams — two on days, two on nights — cover a 24/7 operation, with everyone averaging 42 hours a week.
Try the rotation
Pick a start date to map the rotation onto real weeks. Team A starts the cycle on day 1; the other teams are staggered so cover never drops.
| Mon | Tue | Wed | Thu | Fri | Sat | Sun | |
|---|---|---|---|---|---|---|---|
| Team A | Day | Day | Day | Off | Off | Off | Day |
| Team B | Off | Off | Off | Day | Day | Day | Off |
| Team C | Night | Night | Night | Off | Off | Off | Night |
| Team D | Off | Off | Off | Night | Night | Night | Off |
The math
| Cycle length | 6 days |
|---|---|
| Shift length | 12 hours |
| Average hours per week | 42 hours |
| Shifts per year (per person) | 183 |
| Days off per year | 183 |
| Teams needed for 24/7 cover | 4 |
How the rotation works
3 on 3 off is the middle path of the X-on-X-off family: runs long enough to keep handovers rare, breaks long enough to genuinely recover, and neither long enough to hurt. Three 12-hour shifts back to back is a load most people can absorb; three full days off is enough to reset sleep and still have a life.
The standard 24/7 build uses four crews. A and B alternate the day shift (whenever A works, B rests); C and D alternate nights. Rotating variants swap crews between days and nights every few cycles to share the night load.
Like every even-cycle pattern, it drifts through the week — a 6-day cycle against a 7-day calendar means your work block lands one day earlier each week, touring the full week every six weeks. Weekends are shared with mathematical fairness.
Who uses it
- Care homes & nursing units — 3-shift runs limit fatigue in high-attention care work
- Casinos & 24/7 venues — continuous cover with crews who value frequent breaks
- Mining & plant control rooms — 12-hour consoles where alertness decay matters
- Police & ambulance services — a common alternative to 4 on 4 off where fatigue is a concern
- 24/7 retail & fuel networks — simple alternating crews for round-the-clock sites
Pros & Cons
Pros
- Never more than 3 consecutive 12-hour shifts — noticeably gentler than 4 on 4 off
- Three full recovery days every cycle, all year round
- Half of all days are off-duty; ~183 shifts a year
- Very simple to run with alternating crews
- Fatigue and absence rates typically improve when sites move from 4-on to 3-on blocks
Cons
- The 6-day cycle never aligns with the calendar week — standing weekly commitments are hard
- 36/48-hour week alternation complicates overtime accounting
- Three days off can feel like two by the time you've recovered from nights
- Fixed night crews carry the night burden permanently unless rotated
- More cycle turnovers per month than 4 on 4 off — slightly more roster admin
Variations & alternatives
Free template download
Download the pre-built rotation calendar, ready to print or edit. No email required.
Build this schedule in Tommy
Set the rotation once and Tommy fills the weeks ahead — shift swaps, leave and coverage gaps handled in one place, with your team always seeing the latest version.
