If you own a commercial cleaning company, workers' compensation is almost certainly your largest insurance expense, and it probably feels unfair. It is, in a sense. The base rate for janitorial operations — NCCI class code 9014 in most states — is calculated from the loss experience of every company in the class, from the best-run operator in the state to the one that hires off the street and loses a cleaner to a back injury every month. You pay for their claims before you pay for yours.
The experience modification factor is the industry's mechanism for correcting that. It's also the single biggest lever on your premium, and most cleaning company owners have never seen theirs.
How the mod is built
The experience mod compares your company's actual losses over a three-year window (excluding the most recent year) to the losses expected for a company with your payroll and class codes. A mod of 1.00 means you're average. A mod of 0.80 means your losses are 20% better than expected, and your premium is reduced by 20%. A mod of 1.30 means you're 30% worse, and you pay 30% more. On $1.5M of janitorial payroll, the difference between 0.80 and 1.30 can be $50,000 or more a year.
Two details matter enormously. First, frequency is punished more than severity. The formula weights the first several thousand dollars of every claim ("primary losses") far more heavily than the rest. Ten $4,000 strains will raise your mod more than one $40,000 injury. Second, open claims count at their reserve, not their paid amount. A claim an adjuster has reserved at $25,000 counts as $25,000 even if it closes for $6,000 — unless it closes before the mod is calculated.
The four things that move it
1. Hire and screen like it matters. Post-offer physicals where legal, documented onboarding on lifting technique and chemical handling, and an honest look at whether a role requires repetitive overhead work. The cheapest claim is the one a better hire never has.
2. Build a return-to-work program. An injured cleaner on light duty — restocking, inspecting, training — is a medical-only claim. The same cleaner sitting at home is a lost-time claim, which costs more, stays open longer, and is weighted more heavily in the mod. A formal RTW program with written light-duty job descriptions is the most reliable mod-reduction tool in the industry.
3. Manage claims like money. Report injuries within 24 hours. Get the employee to an occupational clinic, not an emergency room. Push adjusters to close claims and reduce reserves before the unit-stat date (roughly 18 months after the policy start) when losses are reported to the rating bureau. A $25,000 reserve closed at $6,000 before that date is a $19,000 improvement to your mod.
4. Audit the mod itself. Mods are calculated from data that carriers submit, and the data is wrong more often than you'd think — payroll in the wrong class code, a claim from a different policyholder, a closed claim still showing open. PFTN's benchmarking process reviews the worksheet every year and projects next year's mod so you can see the problem before the premium arrives.
The company you become
A cleaning company with a mod of 0.85 isn't just paying less for insurance. It's a company that bids with a cost advantage its competitors can't see, that keeps experienced crews because they don't get hurt, and that underwriters compete for because the numbers say it's run well. The mod is a scorecard. The best operators in the class treat it like one.
