A high Experience Modification Rate (EMR) costs contractors in three ways: higher insurance premiums, lost bids, and lower ISNetworld grades. Here's what triggers a high EMR and what you can do about it.
Your Experience Modification Rate (EMR or XMOD) is a multiplier applied to your workers compensation premium that reflects your claims history relative to the average for your industry. An EMR of 1.0 means you're average. Below 1.0 means fewer or less severe claims than average — your premium goes down. Above 1.0 means more or more severe claims — your premium goes up.
The calculation uses three years of claims history (excluding the most recent year), weighted by claim frequency and severity. Your insurance carrier submits this data to your state's rating bureau (NCCI in most states), which calculates the modifier and applies it to your base premium.
EMR directly multiplies your workers comp premium. An EMR of 1.35 means you're paying 35% more than the base rate for your industry and payroll. For a contractor with $200,000 in annual workers comp premium, that's $70,000 in excess cost above what an EMR-average competitor pays. For a contractor with an EMR below 0.80, the savings are equally significant in the other direction.
Many major operators, general contractors, and public agencies set hard EMR thresholds for contractor eligibility:
A high EMR doesn't just cost you money in premiums — it costs you work you can't bid on at all.
ISNetworld uses EMR as a scoring factor. A high EMR drags down your ISNetworld grade, which in turn affects your bid eligibility with operators who require a minimum ISNetworld score. The result is compounding: a safety incident raises your claims history, which raises your EMR, which lowers your ISNetworld grade, which blocks you from bid eligibility — all from the same root cause.
EMR rises when your claims experience is worse than average for your industry classification. The specific triggers:
EMR improvement is a multi-year process. The calculation uses a rolling three-year window with a one-year lag, so improvements take 12 to 48 months to fully appear in the modifier. But the actions can — and should — start immediately.
Audit your carrier's loss data. EMR calculation errors are common. Your carrier submits payroll and loss data to the rating bureau. Errors in claim amounts, payroll classification, or incident dates can inflate your EMR above where it should be. An EMR audit compares the rating bureau's data to your actual records. EHS Inc. has identified recoverable errors in a significant percentage of audits conducted for new clients.
Correct your OSHA recordkeeping. Incidents that are over-recorded — classified as OSHA recordables when they don't meet the recordability criteria — inflate TRIR and can generate workers comp claims that shouldn't exist. Accurate recordkeeping from the point of incident reduces downstream EMR impact.
Implement a return-to-work program. Lost-time claims are the largest driver of EMR severity. A structured return-to-work program — modified duty, light duty, transitional assignments — reduces the duration of lost-time claims and directly lowers the severity factor in the EMR calculation.
Manage open claims actively. Claims that remain open accumulate reserves that count against your EMR. Active claims management — working with your insurance carrier to close claims appropriately and reduce reserves — can improve your modifier within the current calculation cycle.
Improve incident prevention upstream. Near-miss reporting, regular hazard identification, and consistent JSA/JHA implementation reduce the incidents that drive EMR over the long term. This is the only sustainable fix — the others manage the calculation, but prevention eliminates the underlying driver.
Here's a realistic timeline for EMR improvement after implementing a comprehensive program:
EHS Inc. manages EMR reduction programs for contractors — recordkeeping review, carrier data audit, return-to-work program setup, and ongoing incident monitoring. If your EMR is limiting your insurance costs or your bid eligibility, schedule a call to discuss what's driving it and what a realistic recovery looks like.
Aaron West
Founder, EHS, Inc. — 18+ years in EHS compliance and contractor safety
Aaron West has spent over 18 years helping contractors and businesses navigate OSHA compliance, ISNetworld® certification, and workplace safety management. He founded EHS, Inc. to make enterprise-level EHS accessible to companies of all sizes — serving contractors and businesses nationwide — without long-term contracts or enterprise overhead.
Our team handles the complexity so you can focus on running your business. No long-term contracts, no learning curve.
Talk to EHSThree platforms, three different industries, three sets of fees. Here's exactly which contractor prequalification network your business requires — and what happens when you're on the wrong one.
ISNetworld and Veriforce both prequalify contractors for major operators — but they serve different sectors and have different compliance requirements. Here's how to decide which one your business actually needs.
Avetta and Veriforce serve different industries and different compliance requirements. If your clients are asking for one or both, here's exactly what each platform demands and how to decide.
Framework to achieve zero incidents
Stop hitting paywalls
54 topics in English & Spanish