EMR Benchmarking for Construction Companies

Key Takeaways

• EMR (Experience Modification Rate) is calculated by the National Council on Compensation Insurance (NCCI) or your state’s independent rating bureau, using three years of payroll and claims data, excluding the most recent year.
• A rate of 1.0 means average performance for your class code. A value below 1.0 lowers your premium; above 1.0 raises it, and many general contractors will not accept bids from subcontractors above a 1.0 to 1.2 range.
• The formula weighs claim frequency more heavily than severity, so several small claims can hurt your EMR more than one large claim.
• According to Travelers’ 2026 Injury Impact Report, first-year employees account for 44% of construction injury claims and 47% of construction claim costs, and construction workers miss more workdays per injury (114) than workers in any other industry studied.
• The national 2024 recordable injury rate (TRIR) for construction was 2.2 per 100 full-time workers, according to BLS data, with heavy and civil engineering construction at 1.8 and utility system construction at 1.4.
• Benchmarking works by comparing your TRIR, DART rate, claim costs, and EMR against BLS and NCCI industry data, then targeting the specific gaps that are actually costing you money.
• Lowering EMR takes time. NCCI’s three-year lookback means it typically takes three to four years to see the full effect of a safety program, though early improvements often appear within 12 to 18 months.
• Accurate, timely payroll classification and claims reporting are foundational to an accurate EMR. Misclassified payroll or late claim reporting can distort your rate, independent of how safe your job sites actually are.

A contractor with a 1.15 Experience Modification Rate and a contractor with a 0.85 EMR can bid the exact same job, with the exact same crew size, and land $75,000 to $100,000 apart on workers’ compensation premium alone. One of them may be screened out early because many general contractors and owner prequalification systems use EMR thresholds, often around 1.0, though the exact cutoff varies by client and project type.

That is the reality of EMR in construction today. It is not a compliance footnote. It is a number that appears on your insurance renewal, in your prequalification packet, and in your ability to win the next project. Companies that treat it as background noise pay for it twice: once in premium, and again in lost work.

This guide explains how EMR is calculated, what current claims and safety data reveal about where construction companies are losing ground, and how to build a benchmarking process that tracks your performance against real industry numbers rather than guesswork. Payroll managers, safety directors, and operations leaders will all find a role to play, since EMR is ultimately a byproduct of payroll classification, claims handling, and jobsite safety working together or working against each other.

What is Experience Modification Rate (EMR) and Why It Exists?

The Experience Modification Rate (EMR) is a multiplier that insurance carriers apply to your workers’ compensation premium based on your company’s actual claims history compared to the expected claims history for your industry classification. NCCI administers the rating plan in most states; a handful, including California, New York, and Pennsylvania, use their own independent bureaus, but the underlying logic is the same everywhere in principle.

An EMR of 1.0 means your losses match the expected average for your class code. A 0.90 EMR earns roughly a 10% premium credit. A 1.20 EMR adds roughly a 20% surcharge. The math is not symbolic. If your base premium is 1.0, an EMR of 0.90 brings it down to $225,000, and an EMR of 1.20 pushes it up to $300,000.

How the Formula Actually Works

NCCI's rating plan compares your actual losses to your expected losses over a three-year experience period, typically the three years ending one year before the policy goes into effect. So a mod calculated for a January 1, 2027 renewal would use payroll and claims data from 2023, 2024, and 2025, deliberately excluding the most recent year because that data is not fully developed yet.

The calculation splits each claim into a primary portion and an excess portion at a threshold called the split point. Historically this was a single countrywide figure of $18,500. Beginning with rating effective dates in 2024, NCCI moved to state-specific split points that better reflect each state's actual claim costs, so the exact threshold now varies by state. Primary losses are weighted more heavily than excess losses in the formula, which is why frequency (the number of claims) has a bigger impact on your mod than severity (the size of any one claim). A stabilizing value, sometimes called a ballast, is built into the formula to keep the mod from swinging too far in either direction based on a single incident.

The Actual NCCI Formula

The commonly cited shorthand version is:

EMR = Total Actual Losses ÷ Total Expected Losses

That shorthand is accurate but hides the mechanics. NCCI's Experience Rating Plan actually builds "Total Actual Losses" and "Total Expected Losses" out of three components each, calculated separately for the primary and excess portions of every claim:

Total Actual Losses = Actual Primary Losses + Actual Ratable Excess Losses + Stabilizing Value

Total Expected Losses = Expected Primary Losses + Expected Ratable Excess Losses + Stabilizing Value

Where each term means:

• Primary Losses: the portion of each claim up to the split point (a state-specific dollar threshold, roughly in the $9,500 to $38,000 range depending on the state as of the 2024 methodology update). Primary losses drive most of the mod's movement because they are not discounted.
• Ratable Excess Losses: the portion of each claim above the split point. Excess losses are weighted down, since one catastrophic claim is considered less predictive of future risk than several smaller ones.
• Stabilizing Value (Ballast): a built-in dampener, calculated as the expected excess losses multiplied by a weighting factor tied to company size, then added to both the actual and expected sides. It exists specifically to prevent one severe claim from swinging your mod too far in either direction.

The same weighting factor is why frequency (the number of claims) affects your mod more than severity (the dollar size of any single claim): primary losses count in full, excess losses are discounted, and the stabilizing value further cushions large single-claim impacts. Two contractors can have identical total losses, but the one with more frequent, smaller claims will typically see a worse mod than the one with a single large claim, because more of that contractor's losses fall into the fully-weighted primary category.

A Simplified Example

If a contractor’s actual primary losses come in at $135,000 against an expected $100,000 for a similarly sized business in the same class code, the resulting factor is roughly 1.35. Applied to a $50,000 base premium, that turns into $67,500, an increase of $17,500 for that policy period alone. Multiply that across a multi-year renewal cycle, and the cost of an elevated mod becomes significant fast.

Why EMR Matters Beyond the Premium Line

Bid eligibility. Many general contractors and owners set a hard EMR ceiling, commonly 1.0, sometimes as low as 0.85 for tier-one industrial and utility clients, in their prequalification software (ISNetworld, Avetta, and similar platforms). A subcontractor above that line can be filtered out before pricing is ever reviewed.

Bonding capacity. Sureties consider EMR alongside financial statements when setting bonding limits, since a rising mod signals increased risk exposure.

Subcontractor relationships. A sub’s EMR contributes to the general contractor’s own consolidated risk picture, so GCs actively manage their subcontractor list around this number.

Premium volatility for smaller firms. Because EMR credibility scales with payroll size, a single serious claim has an outsized effect on a small contractor’s mod compared to a large one. This is part of why claims management and early intervention matter more, not less, for smaller companies.

What the Current Data Shows

Grounding your benchmarking effort in real, current numbers matters more than chasing round figures. Here is what the most recent authoritative sources report.

Injury Frequency (TRIR and DART)

The Bureau of Labor Statistics’ 2024 Survey of Occupational Injuries and Illnesses put the private industry recordable injury rate (TRIR) at 2.3 per 100 full-time workers, the lowest since BLS began tracking the measure in 2003, and the DART rate (days away, restricted, or transferred) at 1.4. Construction’s own TRIR for 2024 came in at 2.2, close to the all-industry average, but the segment varies widely: heavy and civil engineering construction ran at 1.8, and utility system construction at 1.4, both meaningfully better than general building construction. That range matters when you benchmark, since comparing a residential framing sub to the all-construction average rather than to its own NAICS segment will produce a misleading picture.

Claim Costs

According to NCCI data reported by the National Safety Council, the average cost of a workers’ compensation claim for accidents occurring from 2022 to 2023 was $47,316 across all claims. Costs vary sharply by cause: claims involving motor vehicle crashes averaged $91,433, those involving burns averaged $64,973, and those involving falls or slips averaged $54,499. NCCI’s most recent State of the Line data shows lost-time claim frequency declining roughly 5% in 2024, even as both medical and indemnity claim severity rose about 6% that year, meaning fewer claims are happening, but the ones that do occur are getting more expensive to resolve.

Large claims are rare but disproportionately damaging. NCCI research has found that claims exceeding $1 million make up less than 0.5% of all lost-time claims but account for up to 15% of total system-wide claim costs, and construction occupations represent almost a third of the “fast-emerging” large claims that exceed that threshold within two years of injury, typically driven by falls from height and motor vehicle incidents.

First-Year Workers and Recovery Time

Travelers’ 2026 Injury Impact Report, based on more than 1.2 million workers’ compensation claims from 2021 through 2025, found that first-year employees account for approximately 37% of all workplace injuries and 34% of overall claim costs company-wide. In construction specifically, that concentration is sharper: new employees account for 44% of construction injuries, and first-year injuries account for 47% of construction claim costs. The same report found injured workers miss an average of 80 workdays across all industries, but construction workers miss the most of any sector studied, at 114 workdays per injury, ahead of transportation (94), professional services (77), and manufacturing (76).

Where Costs Concentrate

Liberty Mutual’s 2025 Workplace Safety Index, which tracks the top causes of injuries serious enough to cause more than five missed workdays, found that U.S. employers pay roughly $58.78 billion a year in direct workers’ compensation costs from these injuries, with the top 10 causes responsible for 86% of that figure. Overexertion involving outside sources remains the single largest cost driver industry-wide at $13.7 billion annually, and is on par with the second-largest at $10.5 billion. For construction specifically, falls to a lower level are consistently the top-ranked risk by cost, which lines up with OSHA enforcement data: fall protection has been the most frequently cited OSHA standard in construction for 14 consecutive years.

The Labor Market Backdrop

Associated Builders and Contractors estimates the industry needs roughly 349,000 net new workers in 2026 and 456,000 in 2027 just to keep pace with demand, on top of normal turnover. A tight labor market and high first-year injury rates compound each other: more new hires mean more workers in their highest-risk year on the job at the same time crews are stretched thin.

Building a Benchmarking Program

Step 1: Pull Your Own Numbers

Start with your OSHA 300A summary for TRIR and DART, your EMR history for the past five years from your carrier or agent, and claim-level detail (cause, cost, status, days lost) from your workers’ compensation carrier or third-party administrator.

Step 2: Compare Against the Right Benchmark

Match your NAICS code precisely. BLS publishes injury and illness rates down to detailed NAICS classifications, and the difference between general building construction, heavy and civil engineering, and specialty trade contractors is significant enough to distort your conclusions if you compare against the wrong segment. NCCI and your state rating bureau are the authoritative sources for expected loss data used in your own EMR calculation; your insurance broker can typically pull your experience rating worksheet directly from NCCI or the applicable bureau.

Step 3: Identify the Gap and the Driver

Cross-reference your claims by cause of injury against the categories that BLS, NCCI, and Liberty Mutual track as the biggest cost drivers: overexertion, falls (same-level and to a lower level), being struck by an object, and motor vehicle incidents. If your claims cluster in a category where the industry data shows the highest average costs, such as falls or vehicle incidents, that is where a targeted intervention will move your EMR the most.

Step 4: Segment by Worker Tenure

Because first-year employees drive such a disproportionate share of construction claims and claim costs, pull your own claims by tenure. If your first-year injury share exceeds the roughly 44% construction benchmark reported by Travelers, your onboarding and mentorship process, not your general safety program, is likely the highest-leverage place to intervene.

Step 5: Set Targets and Review on a Cycle

Monthly review of leading indicators (training completion, near-miss reports, inspection frequency) and quarterly review of lagging indicators (TRIR, DART, claim costs, EMR trend) keep the program from becoming an annual exercise that only gets attention at renewal time.

Strategies That Move the Needle

Structured new-hire safety onboarding. Given that first-year workers account for nearly half of construction injury costs, an eight-hour first-week orientation covering hazard recognition, PPE, and site-specific procedures, followed by active supervision and a formal buddy system through the first 90 days, directly targets the largest concentration of risk in the data.

Fall protection is a standalone priority. Since falls to lower levels are construction’s top-ranked cost driver and OSHA’s most-cited standard for over a decade, a fall protection program that meets or exceeds the OSHA threshold, paired with equipment inspection and rescue planning, directly addresses the single highest-cost category.

Return-to-work programs. A documented modified-duty program that brings injured employees back into productive, restricted roles as soon as medically appropriate shortens claim duration, which reduces both the direct cost of the claim and its weight in your future EMR calculation. Given construction’s 114-day average recovery time, even modest reductions in lost workdays translate into real dollars.

Faster, more accurate claims reporting. Reporting incidents within 24 hours, documenting witness statements while memories are fresh, and setting accurate initial reserves all affect how a claim ultimately settles, which flows directly into your EMR three years later.

Accurate payroll classification. Since expected losses in the EMR formula are tied to payroll by classification code, misclassifying workers into the wrong code or failing to separate exposure across different job classifications on a multi-trade crew can distort the mod independent of your actual safety record. This is one of the more overlooked levers in EMR management, and it sits squarely in the payroll function rather than the safety department.

A Real-World Example

USI Insurance Services has published an account of an industrial services contractor whose 1.16 experience modifier was preventing it from qualifying for new project bids. After a detailed review of the company’s claims data, USI identified reporting and reserve issues that had inflated the mod. USI worked with the company to correct the record with NCCI, bringing the mod down to 0.94. The company went on to win contracts worth more than $15 million that its previous EMR had shut it out of, and realized roughly $84,000 in premium savings over three years. The case illustrates a point worth taking seriously: sometimes the fastest EMR improvement comes not from a new safety initiative, but from correcting inaccurate data already sitting in your experience rating worksheet.

Common Mistakes to Avoid

• Comparing your TRIR or EMR against the all-construction average instead of your specific NAICS segment can make performance look better or worse than it really is.
• Treating EMR as purely a safety metric, when payroll classification accuracy and claims administration are just as influential.
• Waiting until renewal to review your experience rating worksheet, rather than checking it annually for classification or reporting errors.
• Under-investing in new-hire onboarding while focusing safety spend on tenured employees, when the data shows first-year workers carry the highest injury concentration.
• Assuming a single bad year will permanently damage your EMR. The three-year rolling calculation means a bad year ages out of the calculation over time, provided it isn’t repeated.

Bringing It Together

EMR is not just an insurance number. It’s a rolling scorecard built from your payroll classifications, your claims history, and the effectiveness of your jobsite safety program, all measured against what NCCI expects from a company your size doing your kind of work. The current data is consistent with where the risk concentrates: new hires, falls, and overexertion injuries drive a disproportionate share of construction claim costs, and recovery times in this industry run longer than almost anywhere else. A benchmarking program that checks your numbers against BLS and NCCI data on a regular cycle, rather than only at renewal, gives you time to act on a gap before it hardens into next year’s premium.

Because EMR is fed directly by payroll data (classification codes, hours, and wages tied to claims), keeping that data clean and current is as much a part of the fix as any safety training program. Construction payroll platforms like Lumber that handle multi-state, multi-classification payroll can help keep the underlying data your EMR is built on accurate, which is often the first place to look before assuming a rising mod is purely a safety problem.

Frequently Asked Questions

How often is my EMR recalculated?‍

Typically once a year, effective on your policy renewal date, most commonly January 1st. It uses a three-year experience period that excludes the most recent year because that year’s claims data has not yet fully developed. A mod calculated for a 2027 renewal, for example, would draw on data from 2023 through 2025.

Can one large claim wreck my EMR?

‍It can hurt it, but the formula is designed to limit that damage. Because primary losses are weighted more heavily than excess losses, and a stabilizing value is built into the calculation, a single severe claim generally has less impact than the same total cost spread across several smaller claims. This is also why frequency reduction, not just avoiding catastrophic events, is the more reliable lever for improving your mod over time.

How long does it take to improve EMR?

‍Because of the three-year lookback, it typically takes three to four years for a safety and claims management initiative to be fully reflected in your mod, since older, higher-cost years have to roll off the calculation. That said, companies often see measurable movement within 12 to 18 months as the most recent year of improved performance begins to enter the rolling average.

What if my company is new and has no claims history?

‍New businesses typically start at an EMR of 1.0, the industry average, until they accumulate enough payroll and claims history, usually around three years, for NCCI or the applicable state bureau to calculate an individual experience modifier.

Do EMR expectations differ by construction trade?

‍The calculation methodology is the same everywhere, but expected loss rates vary by classification code, and different trades carry different underlying risk profiles. A roofing or fall-exposed trade will be held to a different expected-loss baseline than an electrical or low-height finish trade. Always benchmark against your own classification and consult your carrier or agent for your specific expected loss data rather than relying on general industry commentary.

Where can I verify current benchmark data myself?

‍BLS’s Injury and Illness Incidence Rate tables, available through bls.gov/iif, let you look up TRIR and DART by NAICS code. NCCI publishes State of the Line data and experience rating guidance for the states where it provides ratemaking services. Your insurance broker can pull your actual experience rating worksheet directly from NCCI or your state’s independent bureau.