Experience Modification Rate (EMR)
A multiplier applied to workers compensation premium based on the insured's historical loss experience compared to industry averages.
What It Is
The Experience Modification Rate (EMR), also called the experience mod or e-mod, is a numeric factor applied to a workers compensation premium that reflects the insured's historical claim experience relative to the average for similar businesses in the same state and classification code. An EMR of 1.00 represents average experience. An EMR below 1.00 indicates better-than-average loss experience (resulting in lower premium), while an EMR above 1.00 indicates worse-than-average experience (resulting in higher premium).
The EMR is calculated by the applicable rating bureau — typically NCCI (National Council on Compensation Insurance) or a state-specific bureau — using three years of payroll and loss data, excluding the most recent year. The calculation compares the insured's actual losses to the expected losses for their classification and payroll size.
The EMR is applied as a multiplier to the manual premium. For example, if the manual premium is $50,000 and the EMR is 0.85, the modified premium is $42,500. If the EMR is 1.25, the modified premium is $62,500.
Why It Matters for Brokers
The EMR is one of the most important numbers in commercial insurance. It directly affects workers comp premium — a 10-point improvement in the EMR can save a contractor tens of thousands of dollars annually. Beyond premium, many GCs and project owners require subcontractors to have an EMR below a specified threshold (typically 1.00 or 1.25) to qualify for work. An EMR above the threshold can disqualify a contractor from bidding on projects, making it a business viability issue, not just an insurance issue.
Real-World Example
A framing contractor with $1.8M in annual payroll has a manual workers comp premium of $126,000. Their EMR is 1.32 due to two large lost-time claims in the prior three years. The modified premium is $166,320 ($126,000 x 1.32). The contractor also loses a bid on a $4.2M hospital project because the GC requires an EMR below 1.00. The broker implements a return-to-work program and safety training. After two claim-free years, the EMR drops to 0.91, reducing the premium to $114,660 and restoring the contractor's eligibility for major projects.
Common Mistakes
- 1Not reviewing the EMR worksheet for errors — incorrect payroll data, misclassified claims, or claims attributed to the wrong policy year can inflate the EMR unnecessarily.
- 2Failing to explain to clients that the EMR uses a three-year lookback (excluding the most recent year), so improvements in loss experience take time to affect the mod.
- 3Not advising clients that reporting claims accurately and implementing return-to-work programs can significantly reduce the EMR over time.
How brokerageaudit.com Handles This
Policy Checker extracts the EMR from workers compensation policies and tracks it historically across policy years. It flags EMR increases and decreases at renewal and alerts brokers when a client's EMR approaches or exceeds common contractual thresholds (1.00, 1.10, 1.25). Submission Intake includes the EMR as a required field in workers comp submissions to ensure accurate quoting.