FLSA 7(k) Explained: Why Firefighters Hit Overtime at 212 Hours

A standard job pays overtime after 40 hours in a week. A firefighter working a 24/48 rotation averages about 56 hours a week, so under the normal rule you would be in overtime constantly. That is not how fire pay works, and the reason is a specific carve-out in the Fair Labor Standards Act.

FLSA Section 7(k) is the public-safety exemption. It lets a fire or EMS employer measure overtime over a longer work period instead of a single week. Congress recognized that around-the-clock shift work does not fit a 40-hour week, so it gave public safety agencies a different yardstick.

Under 7(k) the employer declares a fixed, recurring work period somewhere between 7 and 28 days. Overtime is then owed only on the hours above a cap set for that period, not week by week. The 28-day period is the most common choice for fire departments because it stretches the yardstick as far as the law allows.

The cap scales with the length of the period. For fire protection employees the ceilings under 29 CFR 553.230 run about 53 hours for a 7-day period, 106 for 14 days, 159 for 21 days, and 212 hours for a full 28-day period. Whatever period your department declares, the matching cap is your straight-time ceiling.

The 212-hour figure is not arbitrary. It comes out of the ratio the Department of Labor set for fire protection: roughly 53 hours per 7 days of work period. Multiply that by four and you get 212 hours over 28 days. EMS-only agencies that fall under the law-enforcement side of 7(k) use a different ratio and a different cap, which is one reason single-role medic services can land on different numbers than a fire department.

The practical effect is a hard line. Work up to 212 hours in your 28-day period and it is all straight time. Every hour above 212 is overtime at time and a half. That single threshold is what every rotation, Kelly day, and trade approval ultimately gets measured against.

A straight 24/48 runs about 224 hours in a 28-day work period. That is 12 hours over the 212 cap, so roughly 12 hours of overtime are built into every cycle before anyone picks up a single extra shift. Some departments simply pay that guaranteed overtime. Others add a Kelly day, dropping a tour periodically to pull the 28-day total down near 196 hours, under the cap, so the built-in overtime goes away.

This is why the same rotation can pay differently at two departments. It is not the pattern, it is what they do about the 12-hour overage. Knowing your declared work period and where your hours sit inside it tells you whether you are banking guaranteed overtime or riding just under the line.

The cap also governs extra work. When you pick up an open shift or cover a trade, the hours land in your current work period and count toward your 212. Cross the line and the department owes overtime on the overage, which is exactly the cost a scheduler is watching when they approve or hold a shift.

You do not need to run payroll math by hand. Enter your work-period start and your rotation, and a 7(k) calculator will show where you sit against 212 and how much room is left before the next hour becomes overtime. That is the number worth checking before you say yes to a pickup.