The Experience Modification Rate and OSHA recordkeeping are linked because the same workplace injuries drive both. When an employee gets hurt, the incident goes on your OSHA 300 log and, in most cases, generates a workers’ compensation claim that your insurer reports to a rating bureau. That claim data is what produces your EMR. Clean logs and a favorable EMR almost always travel together, and so do the opposite.
What the EMR Measures
Your EMR is a multiplier applied to your workers’ compensation premium. It compares your company’s actual claim losses to the losses expected for a business of your size and industry classification. A score of 1.0 is the industry average. Below it, you get a discount; above it, you pay more. The National Council on Compensation Insurance (NCCI) runs this calculation in most states, but roughly a dozen states — including California, New York, Pennsylvania, and Michigan — use their own rating bureaus with similar formulas.
The formula is more layered than actual losses over expected losses. Each claim is split into a primary portion (below a set dollar threshold) and an excess portion (everything above it). Primary losses carry far more weight because they reflect how often claims happen. Excess losses are dampened, because one catastrophic event is treated as an outlier rather than a pattern. The practical takeaway: frequent small claims hurt your EMR more than a single expensive one.
How OSHA Logs and EMR Data Are Connected
OSHA and your insurance carrier track injuries through separate systems. OSHA uses your 300 log for enforcement and statistics. Your insurer reports claim data to NCCI or the state bureau, which calculates your EMR. The streams don’t talk to each other, but they originate from the same events. That is why discrepancies between what you log and what your insurer reports can distort your EMR and invite scrutiny during audits.
OSHA’s authority comes from the OSH Act, including the General Duty Clause, which requires employers to keep the workplace free of serious recognized hazards.1Occupational Safety and Health Administration. Laws and Regulations Inspections and citations become part of a public safety profile that clients, general contractors, and government agencies check alongside your EMR.
Which Injuries Are Recordable
Not every scrape belongs on the log. A work-related injury or illness is recordable when it results in death, days away from work, restricted duty or job transfer, medical treatment beyond first aid, loss of consciousness, or a significant aggravation of a preexisting condition producing one of those outcomes.2Occupational Safety and Health Administration. 29 CFR 1904.5 – Determination of Work-Relatedness
The line most employers get wrong is first aid versus medical treatment. Applying a bandage or handing out a non-prescription painkiller is first aid. Prescribing medication, suturing a wound, or ordering physical therapy is medical treatment, and it triggers a recordable entry. Every recordable entry also feeds your Total Case Incident Rate (TCIR), which clients evaluate alongside your EMR.
The Forms You Have to Keep
Three forms sit at the center of OSHA recordkeeping: the 300 Log of Work-Related Injuries and Illnesses, the 300-A Annual Summary, and the 301 Incident Report for each individual case.3Occupational Safety and Health Administration. 29 CFR 1904.29 – Forms The 300 log holds a short description of each recordable event. The 300-A summarizes the year — total injury counts, hours worked, days away from work — must be certified by a company executive, and must be posted where employees can see it at the start of each year. Blank forms live on OSHA’s recordkeeping page.4Occupational Safety and Health Administration. Injury and Illness Recordkeeping Forms
Accuracy matters beyond compliance. The injury counts and lost-workday figures on your logs are the same numbers your insurer feeds to the rating bureau. Mismatches distort your EMR calculation.
Who Has to Keep Records
Companies with ten or fewer employees at all times during the previous calendar year are partially exempt from routine recordkeeping.5Occupational Safety and Health Administration. 29 CFR 1904.1 – Partial Exemption for Employers With 10 or Fewer Employees A separate exemption covers establishments in certain low-hazard industries — retail stores, law offices, restaurants, and similar businesses — regardless of employee count.6Occupational Safety and Health Administration. 1904 Subpart B App A – Partially Exempt Industries Even exempt employers must report any fatality, in-patient hospitalization, amputation, or loss of an eye to OSHA.
Electronic Submission
Many employers must also submit injury data electronically through OSHA’s Injury Tracking Application (ITA) by March 2 each year. The threshold depends on establishment size and industry:
- 250 or more employees must submit Form 300A data, unless classified in a specifically exempt industry.
- 20 to 249 employees in designated industries must submit Form 300A data.
- 100 or more employees in high-hazard industries must submit Form 300 and Form 301 data on top of the 300A.
If you’re unsure whether your establishment qualifies, OSHA’s ITA Coverage Application will tell you.7Occupational Safety and Health Administration. Injury Tracking Application Frequently Asked Questions The submitted data is publicly accessible, which means clients and competitors can look up your reported numbers.
Why Frequency Matters More Than Severity
Because the EMR formula weights primary losses heavily, a pattern of small injuries hurts more than one expensive claim. Ten $5,000 claims usually sit entirely below the split point, landing in the primary bucket. A single $50,000 claim contributes only the portion below the split point as primary loss, with the rest dampened. The formula reads recurring injuries as a systemic problem.
That is why programs targeting the everyday injuries — slips, strains, lacerations — move the EMR more than catastrophic-event prevention alone.8National Council on Compensation Insurance. Experience Rating Plan Methodology Update Filing Summary
The Three-Year Lookback
Your current EMR is built from three full years of payroll and loss data.9National Council on Compensation Insurance. ABCs of Experience Rating The most recently completed policy year is excluded because those claims are still developing. A 2026 renewal typically pulls data from 2022, 2023, and 2024. A bad year eventually cycles out, but a serious spike can inflate premiums for three or four renewal periods.
Both Numbers Show Up in Bidding
General contractors and government agencies use safety metrics as gatekeepers. An EMR above 1.0 often disqualifies a subcontractor before price or technical qualifications are even considered. High-risk projects sometimes set the bar at 0.85 or 0.90.
The TCIR usually appears alongside the EMR. It takes the recordable injuries from your OSHA 300 log, multiplies by 200,000 (100 full-time employees working 2,000 hours each), and divides by total hours actually worked.10Occupational Safety and Health Administration. Clarification on How the Formula Is Used by OSHA to Calculate Incidence Rate Fifty employees with two recordable injuries in a year produces a TCIR of 4.0. Bidding packages routinely require both figures along with copies of your 300A for the past three years.
Penalties for Violations and Misreporting
OSHA fines are adjusted for inflation. As of the most recent adjustment, a serious violation carries a maximum penalty of $16,550. Willful or repeated violations can reach $165,514 per violation. Failure to correct a cited hazard by the abatement deadline adds $16,550 per day.11Occupational Safety and Health Administration. OSHA Penalties These are independent of any workers’ compensation consequences.
Intentionally misrepresenting injury logs to lower your EMR or reduce premiums is workers’ compensation fraud. Rules vary by state, but charges can carry felony classification, fines, and prison time. Underreporting payroll, misclassifying employees into lower-risk job codes, and concealing ownership to dodge a high EMR all fall within the definition. Insurers who discover misreporting can retroactively adjust premiums and pursue civil recovery.
Checking and Disputing Your Records
You can pull your current EMR through NCCI’s Riskworkstation portal at ncci.com, which offers current mods, historical mods, and full experience rating worksheets at different price points.12NCCI. Experience Rating Mods and Worksheets Carriers of record access their policyholders’ worksheets at no charge. In states with independent rating bureaus, the process runs through the state portal.
Your OSHA history is available through the agency’s public Establishment Search database, where inspection records and citations are searchable by company name.13Occupational Safety and Health Administration. Data
EMR mistakes are more common than most employers realize. Clerical errors in reported payroll, misclassified job codes, or claims attributed to the wrong policy can all skew the number. Raise a suspected error with your carrier first. Pay the undisputed portion of the premium and provide a written explanation of where the calculation went wrong. If that doesn’t resolve it, NCCI runs a formal dispute resolution process: submit a written request that includes the estimated premium in dispute, proof you’ve paid all undisputed premium, and supporting documentation. A dispute consultant works with both parties, and can escalate to the state Workers Compensation Appeals Board if needed.14National Council on Compensation Insurance. Dispute Resolution Process Reading your experience rating worksheet line by line before each renewal — confirming that every claim is yours, every payroll figure is correct, and every class code matches — catches most problems early.
Moving Both Numbers in the Right Direction
The safety investments that pay off most reliably are the ones targeting frequent, low-cost injuries. Slip-and-fall prevention, lifting training, machine guarding, and personal protective equipment programs reduce the steady trickle of primary losses that the EMR formula punishes hardest. Fewer recordable events also drop your TCIR and keep your OSHA log clean.
A structured return-to-work program matters more than most employers expect. When an injured worker comes back on modified duty instead of staying home, the claim accumulates fewer lost-time days and its total cost drops within the rating window. That lower cost feeds directly into a lower EMR at the next calculation. Some states offer premium credits for certified safety committees or formal loss-prevention programs; the discount is modest but stacks on top of the organic improvement.
The three-year lookback means changes take time to show up, but they compound. Each clean year replacing an older, worse one produces measurable premium relief. Companies that treat safety as a long-term financial strategy rather than a compliance checkbox tend to settle well below 1.0 within a few renewal cycles.