The Kelly schedule is what happens when someone looks at the 24/48 firefighter schedule and says, “This is good, but what if we added an extra day off?” That extra day, the Kelly day, transforms a decent rotation into one that firefighters genuinely prefer. Instead of the relentless work-one-off-two rhythm of the 24/48, the Kelly schedule gives you a 4-day break every 9 days.
The Kelly schedule is the most popular firefighter shift schedule in mid-to-large departments across the United States. If you’re starting at a department that runs the Kelly, or you’re trying to understand how the Kelly schedule compares to other fire service schedules, this guide has you covered. Plus there’s a free Kelly calendar generator to map out your Kelly shifts for the year.
- What Is a Kelly Schedule?
- How the Kelly Schedule Rotation Works
- Day-by-Day Breakdown (All 3 Teams)
- Kelly Schedule Hours, Overtime, and Pay
- The Real Pros and Cons
- Who Uses the Kelly Schedule?
- Kelly Schedule vs 24/48
- Kelly Schedule vs 48/96
- Tips for Working the Kelly Schedule Rotation
- Free Kelly Calendar Generator
What Is a Kelly Schedule?
The Kelly schedule (also called the Kelly shift or ABC schedule) is a 9-day rotating cycle used primarily by fire departments. Three teams rotate through the Kelly schedule pattern of 24-hour shifts with a built-in extra day off, the “Kelly day,” that reduces average weekly hours and provides a longer break every third cycle.
The name comes from Mayor Edward Kelly of Chicago, who in the early 1900s negotiated an additional day off for firefighters. That extra day became known as the “Kelly day,” and the schedule built around it took his name. It’s been a staple of American fire service ever since.
The Kelly schedule averages about 53 hours per week, compared to 56 hours on a straight 24/48. That 3-hour difference might not sound like much, but over a year the Kelly schedule adds up to about 156 fewer hours at the station. More importantly, those hours come in the form of a 4-day break every 9 days, which is a real quality-of-life upgrade.
How the Kelly Schedule Rotation Works
The 9-day cycle for one team breaks down like this:
- Day 1: Work 24 hours
- Day 2: Off
- Day 3: Work 24 hours
- Day 4: Off
- Day 5: Work 24 hours
- Days 6-9: Off (4 consecutive days, includes the Kelly day)
The pattern is: on-off-on-off-on-off-off-off-off. Three 24-hour shifts in 9 days, with the last break extended to 4 days thanks to the Kelly day. Then the cycle repeats.
Three teams run this cycle staggered so that one team is always on duty. The math works out cleanly: 3 teams × 3 shifts per 9-day cycle = 9 shifts covering 9 days. Every day is covered. It’s a different approach from 12-hour patterns like the 2-2-3 or Pitman, which use 4 teams and shorter shifts to achieve the same 24/7 coverage.
Day-by-Day Breakdown (All 3 Teams)
Here’s the full 9-day cycle for all 3 teams. W = Working (24 hours), – = Off, K = Kelly day (off).
| Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
|---|---|---|---|---|---|---|---|---|---|
| A | W | – | W | – | W | – | – | – | K |
| B | – | W | – | W | – | – | – | K | W |
| C | – | – | – | – | K | W | – | W | – |
Every day has exactly one team on duty. The Kelly day (K) is what distinguishes this from a straight 24/48. It’s the extra off day that creates the 4-day break at the end of each cycle.
Kelly Schedule Hours, Overtime, and Pay
On the Kelly schedule, you work 3 shifts per 9-day cycle. At 24 hours each, that’s 72 hours per cycle, averaging about 53 hours per week.
| Metric | Amount |
|---|---|
| Shifts per cycle (9 days) | 3 |
| Hours per cycle | 72 |
| Average hours per week | ~53 |
| Shifts per year | ~121 |
| Total hours per year | ~2,912 |
Like the 24/48, fire departments using the Kelly schedule typically operate under the FLSA Section 7(k) exemption, which allows longer work periods before overtime kicks in. The exact overtime calculation on a Kelly schedule varies by department.
Many firefighters on the Kelly schedule pick up overtime shifts during their 4-day breaks. The extended time off makes it feasible to work extra shifts without burning out, which is a nice income boost. For comparison, 12-hour patterns like the 2-2-3 and DuPont average about 42 hours per week with built-in overtime from alternating 48/36-hour weeks.
The Real Pros and Cons of the Kelly Schedule
What Makes It Worth It
- 4-day break every 9 days. This is the Kelly’s signature feature. Four consecutive days off is enough for a short trip, a home project, quality family time, or just proper rest. No other common firefighter schedule gives you this much consecutive time off this frequently.
- Fewer hours than the 24/48. Averaging 53 hours/week instead of 56 means about 156 fewer hours at the station per year. That’s roughly 6.5 fewer 24-hour shifts annually.
- Predictable and easy to track. The 9-day cycle is short enough to memorize quickly. After a month, you’ll know your schedule without checking.
- Time for second jobs or education. The 4-day breaks give firefighters real windows for paramedic school, college courses, side businesses, or overtime shifts at other stations.
- Strong team cohesion. Same as any 24-hour shift schedule: you spend full days with your crew, building the bonds that make fire service work.
What’s Hard About It
- Three 24-hour Kelly schedule shifts in 5 days is intense. During the “on” portion of the Kelly cycle (days 1-5), you work 3 out of 5 days. If those shifts are busy, you’re accumulating serious fatigue by the third one.
- Busy stations mean no sleep. On high-call-volume shifts, you might get 1-2 hours of sleep in 24 hours. Research from the CDC’s NIOSH program links chronic sleep deprivation from extended shifts to increased cardiovascular risk and impaired decision-making. Do that three times in 5 days on the Kelly schedule and you’re running on empty by the time your 4-day break starts.
- The 9-day cycle doesn’t align with weeks. Your work days shift through the week, so you can’t count on having the same days off. This makes recurring weekly commitments difficult.
- Still 53 hours per week. That’s 13 hours more than a standard 40-hour job. The concentrated schedule helps, but the total hours are still high.
- Holiday rotation. You’ll work roughly one-third of all holidays. The Kelly day doesn’t change this. It just shifts which holidays you miss.
Who Uses the Kelly Schedule?
- Mid-to-large fire departments. The Kelly schedule is the standard in most career fire departments with enough staffing for 3 full teams. Cities like Chicago (where the Kelly schedule originated), Houston, Phoenix, Dallas, and hundreds of others use it. More on firefighter shift calendars.
- EMS agencies. Paramedic and ambulance services that run 24-hour shifts often adopt the Kelly schedule, especially those integrated with fire departments.
- Some combination departments. Departments that handle both fire and EMS calls typically use the Kelly for all personnel.
Smaller departments that can’t staff the Kelly day often use the simpler 24/48 schedule instead. The Kelly schedule requires slightly more staffing to cover the extra day off. For departments that use 12-hour shifts instead of 24-hour shifts, patterns like the Pitman or 2-2-3 are more common.
Kelly Schedule vs 24/48
The 24/48 is the Kelly’s simpler sibling. Same 24-hour shifts, same 3 teams, but without the Kelly day.
| Feature | Kelly | 24/48 |
|---|---|---|
| Cycle length | 9 days | 3 days |
| Average hours/week | ~53 | ~56 |
| Longest break | 4 days | 2 days |
| Shifts per year | ~121 | ~122 |
| Extra day off | Yes (Kelly day) | No |
| Staffing requirement | Slightly higher | Standard |
If your department offers the Kelly schedule, take it. The 4-day break is a significant quality-of-life improvement over the 24/48’s 2-day breaks. The only reason departments stick with the 24/48 is staffing: the Kelly schedule requires slightly more personnel to cover the Kelly day.
Kelly Schedule vs 48/96
The 48/96 schedule is the newer alternative gaining traction in fire departments. Instead of three separate 24-hour shifts, you work two consecutive 24-hour shifts (48 hours) and get 96 hours (4 days) off.
| Feature | Kelly | 48/96 |
|---|---|---|
| Shift length | 24 hours | 48 hours (2 × 24) |
| Longest break | 4 days | 4 days |
| Average hours/week | ~53 | ~56 |
| Commutes per month | ~10 | ~5 |
| Consecutive work hours | 24 | 48 |
The 48/96 gives you the same 4-day breaks but with half the commutes. The trade-off is spending 48 straight hours at the station, which is exhausting on busy shifts. The Kelly schedule spreads your work out more evenly, which is easier on your body. Both have their fans. It often comes down to personal preference and department culture.
Tips for Working the Kelly Schedule Rotation
Getting Through the Work Block
- Treat the off day between shifts as recovery, not recreation. On days 2 and 4 of the cycle, your job is to rest. Sleep, eat well, and recharge. Don’t pack your off days with activities during the work block.
- Sleep at the station when you can. Even on quiet nights, some firefighters stay up watching TV or talking. Get in the habit of sleeping when there’s a lull. You’ll perform better on calls and feel better the next day.
- The third shift is the hardest. By your third 24-hour shift in 5 days, fatigue is real. Be extra careful with physical tasks and driving. This is when mistakes happen.
- Eat well at the station. Station cooking isn’t just tradition. It’s fuel. A proper dinner keeps your energy up through the night. Skip the junk food.
Making the Most of Your 4-Day Break
- Day 1 is for sleeping. Don’t fight it. Get home, eat, sleep. You’ve earned it after three 24-hour shifts.
- Days 2-3 are your golden days. You’re rested and you have time. Use these for family, projects, travel, exercise, or whatever fills your cup.
- Day 4 is transition day. Start mentally preparing for your next work block. Get your gear ready, meal prep for the station, and get to bed at a reasonable hour.
- Plan one meaningful thing per break. A day trip, a family outing, a project milestone. Having something on the calendar gives the break purpose.
Long-Term Health
- Exercise during your 4-day breaks. Even moderate activity (walking, swimming, gym sessions) improves sleep quality and reduces the health risks associated with shift work.
- Get annual physicals. Firefighting combined with shift work puts stress on your cardiovascular system. Regular checkups catch problems early.
- Protect your sleep. Blackout curtains, a cool room, no screens before bed. These aren’t optional for shift workers. They’re essential.
- Use your Kelly schedule calendar. Generate your Kelly schedule with our free tool, export it to Google Calendar, and share it with your family. When everyone knows your Kelly schedule, life runs smoother. You can also use our shift schedule maker to compare the Kelly with other firefighter shift patterns.
Ready to map out your Kelly schedule? Use the free generator above to build your 12-month firefighter shift calendar, then export it to Google Calendar, print, or download as PDF. Takes about 30 seconds. Also check out the 24/48 schedule if your department runs the simpler rotation, or explore the 2-2-3 and Pitman schedules for 12-hour shift alternatives.