TL;DR
ISNetworld requires contractors to report a three-year rolling Total Recordable Incident Rate (TRIR) as part of their safety qualification. TRIR typically accounts for about 30% of your ISNetworld grade, and your rate is benchmarked against the Bureau of Labor Statistics average for your specific NAICS code. Most hiring clients set maximum TRIR thresholds between 0.5 and 2.0, depending on the industry and scope of work. If your TRIR exceeds your client’s threshold, you can lose bid eligibility and site access, even if every other part of your account is in perfect order.
Key Takeaway: What is the ISNetworld TRIR Requirement for 2026? ISNetworld evaluates contractors using a 3-year rolling average Total Recordable Incident Rate (TRIR), which accounts for approximately 30% of your overall safety grade. While ISNetworld does not set a single baseline, hiring clients typically enforce maximum thresholds between 0.5 and 2.0 based on your specific NAICS code BLS industry average. Exceeding your client’s threshold can result in account caps (Grade C/D/F) and loss of bid eligibility.
What Is TRIR and How Is It Calculated?
TRIR stands for Total Recordable Incident Rate. You may also see it called TCIR (Total Case Incident Rate). Both refer to the same metric: the number of OSHA-recordable injuries and illnesses your company experiences per 200,000 hours worked.
The formula is straightforward:
TRIR = (Number of OSHA Recordable Incidents x 200,000) / Total Hours Worked
The 200,000 multiplier represents 100 full-time employees working 40 hours per week for 50 weeks per year. It normalizes the rate so companies of different sizes can be compared on equal footing.
A worked example: if your company logged 60,000 hours last year and had two recordable incidents, your TRIR would be (2 x 200,000) / 60,000 = 6.67. That number follows you for three years inside ISNetworld.
Parameter | Formula Input | Small Company Example (10 Workers) | Large Company Example (100 Workers) |
Recordable Incidents | N | 1 | 1 |
Hours Worked | H | 20,000 hrs | 200,000 hrs |
OSHA Multiplier | 200,000 | 200,000 | 200,000 |
Resulting TRIR | (N x 200,000) / H | 10.0 (Fails most thresholds) | 1.0 (Passes most thresholds) |
What Counts as a Recordable Incident?
Under OSHA’s recordkeeping regulations (29 CFR 1904), an injury or illness is recordable if it is work-related and results in any of the following:
Death
Days away from work
Restricted work or job transfer
Medical treatment beyond first aid
Loss of consciousness
First-aid-only cases are not recordable. The distinction between “first aid” and “medical treatment” matters enormously, because a single misclassified case can inflate your rate. On your OSHA 300 log, recordable cases appear in Columns G through J. A common mistake is including Column J cases (other recordable cases) in the DART rate calculation, which is a separate metric.
If your company needs help maintaining accurate OSHA 300 and 300A logs, getting the classifications right before they reach ISNetworld is the single most important thing you can do to protect your grade.
How ISNetworld Uses Your TRIR
ISNetworld does not simply look at your most recent year. It calculates a three-year rolling average of your TRIR. That means a single recordable incident in 2024 will affect your ISNetworld score through the end of 2026.
How to Calculate Your 3-Year Rolling Average for 2026 Submissions
ISNetworld does not average your annual TRIR percentages directly. Instead, it sums your total recordables across all three years and divides them by your combined total hours worked across that same period.
Sum total recordable incidents for 2023, 2024, and 2025.
Sum total hours worked for 2023, 2024, and 2025.
Apply the 3-Year Rolling Formula:
3-Year TRIR = [ (Incidents 2023 + Incidents 2024 + Incidents 2025) x 200,000 ] / (Hours 2023 + Hours 2024 + Hours 2025)
Note: Averaging three annual TRIR percentages directly will yield a mathematically incorrect result if your annual hours worked vary year-over-year.
This rolling window exists because ISNetworld’s hiring clients want to see sustained safety performance, not a one-year snapshot. But it also means bad years linger, and good years take time to improve your standing.
Your TRIR is entered through the Q&A (questionnaire) section of your ISNetworld account, where ISN verifies the data you submit against your OSHA 300A annual summaries and workers’ compensation documentation.
Need help navigating the full ISNetworld compliance process? ISNetworld consulting support can help contractors get their accounts right from the start.
ISNetworld Grade Composition: Where TRIR Fits
Your ISNetworld grade is not based on TRIR alone. It is a weighted score composed of several elements:
Component | Approximate Weight |
|---|---|
RAVS (Review and Verification Services) | 30-40% |
TRIR (3-year rolling average) | ~30% |
DART Rate | ~20% |
Other compliance factors (EMR, insurance, etc.) | 10-20% |
The key takeaway: TRIR accounts for roughly 30% of your ISNetworld grade. A high TRIR can tank your overall standing even if your RAVS scores are perfect and every written program is in order.
TRIR and DART are related but distinct. TRIR captures all recordable incidents. DART (Days Away, Restricted, or Transferred) captures only the subset of recordable incidents that result in lost time, restricted duty, or job transfer. Both matter for your grade, but TRIR carries more weight.
Your experience modification rate (EMR) also factors into the overall picture, particularly for workers’ compensation and some hiring client scorecards.
ISNetworld Grading Scale: How TRIR Impacts Your Account Grade
Hiring clients apply custom grading thresholds to your submitted 3-year rolling TRIR. Below is the standard grade breakdown and the operational impact on contractor eligibility:
ISNetworld Grade | TRIR Performance vs. Threshold | Operational Impact | Site Access & Bidding Status |
Grade A | Well below BLS average (<0.8 TRIR typical) | Full Approval | Unrestricted bidding & site access |
Grade B | At or slightly below client threshold | Conditional Approval | Full access; minor safety monitoring |
Grade C | Exceeds client threshold | Restricted Approval | Action Plan / Mitigation Plan required |
Grade D | Significantly exceeds threshold | Variance Required | Escorted access; HES supervisor required |
Grade F | Unacceptable incident rates | Disqualified | Blocked from work without VP-level waiver |
What TRIR Thresholds Do Hiring Clients Set?
Here is the critical nuance that many contractors miss: there is no single “ISNetworld TRIR requirement.” ISNetworld is the platform. Your hiring client sets the actual threshold.
Each operator or general contractor configures their own scorecard within ISNetworld. Chevron has different criteria than ExxonMobil. Shell has different criteria than Marathon. A utility company in the Southeast will have different expectations than an oil sands operator in Alberta. When people search for “ISNetworld TRIR requirements,” what they are really asking about is their specific hiring client’s requirements, as enforced through the ISNetworld platform.
That said, common thresholds cluster in predictable ranges:
Industry | Typical TRIR Threshold Range |
|---|---|
General construction | 1.0 – 2.0 |
Oil and gas | 0.5 – 1.5 |
Utilities | 0.8 – 1.5 |
Petrochemical / refining | 0.5 – 1.0 |
For contractors targeting Grade A status, some operator scorecards require a TRIR below 0.8, with the most demanding clients setting the bar at 0.5. DART rate requirements for Grade A typically fall below 0.5, with RAVS scores above 90%.
One Worthington Enterprises grading document illustrates the scoring approach clearly: contractors receive the maximum 30 points (“Excellent”) if both TRIR and DART statistics are at or below the BLS industry average. Contractors score zero points (“Unacceptable”) if both statistics exceed 125% of the BLS average.
Grade-Based Consequences
Based on publicly available operator grading models, the consequences of a low ISNetworld grade escalate quickly:
Grade A or B: No restrictions. Full bid eligibility.
Grade C: Mitigation plan required. Pre-job safety meeting required with the hiring client.
Grade D: Written management approval required. A trained HES person must be on-site for all work.
Grade F: Contractor cannot be used without VP-level approval from the hiring client.
Most operators require a B or higher for routine work. Some require A for high-risk scopes. A few operate tier-based systems where the threshold tightens as the risk level of the work increases.
2024 BLS TRIR Benchmarks
ISNetworld compares your TRIR against Bureau of Labor Statistics data for your industry. The BLS reported that the national TRIR for private industry fell to 2.3 in 2024, down from 2.4 in 2023, marking the lowest recorded rate since 2003.
Here are the sector-level benchmarks that matter most to contractors:
Industry Sector | 2024 TRIR (per 100 FTE) |
|---|---|
All private industry | 2.3 |
Construction (overall) | 2.3 |
Heavy and civil engineering | 1.8 |
Utility system construction | 1.4 |
Framing contractors (NAICS 238130) | 5.5 |
Siding contractors (NAICS 238170) | 5.8 |
That last row is the one that should get your attention. Benchmarking your TRIR against construction’s overall 2.3 average can be misleading when your specific subsector carries a dramatically different baseline. A framing contractor with a TRIR of 4.0 looks terrible against the sector average but is actually well below their NAICS peer group at 5.5.
This leads directly to one of the most under-discussed aspects of ISNetworld TRIR requirements.
The NAICS Code: Why Your Industry Classification Matters
Your TRIR is not graded in a vacuum. ISNetworld compares your rate against other companies that share your NAICS code. If the average TRIR for your industry peer group is 5.0 and your TRIR is below 5.0, you are considered safety-conscious within that context. If the average is 1.4 and you are at 2.0, you have a problem.
This means the NAICS code your company selects during ISNetworld account setup can make the difference between passing and failing a hiring client’s threshold.
This is not about gaming the system. It is about accuracy. Many contractors perform work that legitimately spans multiple NAICS codes, and selecting the one that most accurately reflects your primary operations is both allowed and important. A specialty concrete contractor who selects a broad “construction” NAICS code may be graded against a peer group whose average is lower than their actual specialty, making a perfectly reasonable TRIR look worse than it is.
Practitioners on safety forums consistently raise this as a tactical point that ISNetworld consultants should address early in the account setup process. If you have never reviewed your NAICS code assignment, it is worth checking whether it truly reflects the work you do.
How to Submit TRIR in ISNetworld
Your TRIR data enters ISNetworld through the Q&A (questionnaire) section of your account. Here is what the process involves:
Enter three years of safety performance data. You will need your TRIR, DART rate, and EMR for each of the past three years.
Upload supporting documentation. ISN requires your OSHA 300A annual summaries and may request your OSHA 300 logs. Workers’ compensation documentation is also typically required for EMR verification.
ISN verifies your numbers. ISNetworld cross-references your submitted rates against the uploaded 300A summaries. Discrepancies get flagged.
Update annually. OSHA 300A summaries must be posted by February 1 and are due for electronic submission by March 2. Your ISNetworld data should be updated on the same cycle.
One important distinction: federal OSHA rules exempt companies with 10 or fewer employees from routine recordkeeping requirements. ISNetworld does not. Hiring clients require completed logs from all contractors regardless of headcount. If you have been relying on the small employer exemption, you will need OSHA 300 and 300A logs to complete your ISNetworld account.
Common Submission Mistakes
Compliance guides and practitioners consistently flag the same errors:
Using the wrong year for OSHA 300 data. Submitting 2023 data when the system expects 2024.
Calculating TRIR incorrectly. The most common math error involves the 200,000 multiplier or failing to use total hours worked rather than regular hours.
Forgetting subcontractor hours. Some hiring clients require you to include subcontractor hours in your total when your company controlled the work.
Incomplete hours worked. Owner hours and overtime must be included in the denominator.
Failing to update after a new EMR cycle. When your workers’ comp carrier issues a new EMR, your ISNetworld account should reflect it promptly.
Accurate OSHA recordkeeping is the foundation. If your logs are wrong, your TRIR is wrong, and your ISNetworld grade suffers.
The Small Contractor TRIR Problem
This is the single most frustrating aspect of ISNetworld TRIR requirements for small companies, and it is a pure math problem.
Consider a 10-person crew working roughly 20,000 hours a year. One recordable incident produces a TRIR of 10.0. That same incident at a company logging 200,000 hours gives a TRIR of 1.0. The injury is identical. The statistical outcome is not.
Scale it down further. A two-person crew working 4,160 hours per year with one recordable incident has a TRIR of 48.0. That number is off the charts by any industry standard, yet it represents a single sprained wrist that required a doctor visit.
The practical reality: if you run a small company, every recordable incident carries outsized consequences for your ISNetworld standing. Prevention is not just a safety imperative. It is a business survival strategy.
Small contractors who need help managing their ISNetworld compliance often benefit from ISNetworld grade improvement services that address both the data and the underlying safety gaps.
What to Do When Your TRIR Is Too High
A high TRIR does not automatically mean you are locked out of work. But it does mean you need to act. Here is a practical sequence:
Audit OSHA 300 Logs for Misclassification (29 CFR 1904 Compliance) Re-evaluate every incident from the past 3 years. Ensure first-aid cases were not recorded as medical treatment. Misclassified first-aid injuries artificially inflate your TRIR.
Recalculate Denial-Free Hours Worked Confirm all legitimate working hours—including administrative staff, overtime, and owner hours—are included in total hours worked. A larger denominator directly lowers your TRIR rate.
Review & Align NAICS Code Verify that your primary operations match your assigned NAICS code rather than a generic or higher-risk category. Benchmarking against the correct industry group ensures fair evaluation.
Submit an ISNetworld Mitigation Plan When your TRIR exceeds a client’s baseline, draft a formal root-cause analysis and corrective action plan within ISNetworld to request score overrides from the client.
TRIR vs. DART vs. EMR: Quick Reference
These three metrics appear together throughout ISNetworld, and contractors frequently confuse them:
Metric | What It Measures | ISNetworld Weight |
|---|---|---|
TRIR | All OSHA-recordable incidents per 200,000 hours | ~30% |
DART | Only incidents involving days away, restricted duty, or transfer per 200,000 hours | ~20% |
EMR | Workers’ compensation loss experience compared to industry peers (set by your insurer) | Varies by operator |
DART is always a subset of TRIR. Your DART can never be higher than your TRIR. EMR operates on a completely different calculation tied to your workers’ compensation claims history and is set by your insurance carrier, not calculated from your OSHA logs.
Frequently Asked Questions
What TRIR does ISNetworld require?
ISNetworld itself does not set a single TRIR threshold. Each hiring client configures their own scorecard. Common thresholds range from 1.0 to 2.0 for construction and 0.5 to 1.5 for oil and gas. Your specific requirement depends on which clients you work for and what scope of work you perform.
How many years of TRIR data does ISNetworld require?
ISNetworld requires three years of safety performance data. Your TRIR is calculated as a three-year rolling average, meaning each year’s data remains in the calculation for a full three-year cycle.
Does ISNetworld require OSHA logs from companies with fewer than 10 employees?
Yes. While federal OSHA exempts employers with 10 or fewer employees from routine recordkeeping, ISNetworld hiring clients require completed OSHA 300 and 300A logs from all contractors regardless of size.
What happens if my TRIR is above my client’s threshold?
Your ISNetworld grade drops, potentially to a C, D, or F. Depending on the operator’s grading model, you may need to submit a mitigation plan, obtain management-level approval for continued work, or be barred from the job entirely. The consequences vary by client and risk level.
How can a small contractor lower their TRIR?
The math is difficult for small companies because one incident has an outsized impact. Focus on prevention first. Beyond that, verify that all recordable classifications are accurate, count every legitimate hour worked (including owners and overtime), and confirm your NAICS code accurately reflects your operations. A fractional safety manager can help small companies build the programs that prevent recordables in the first place.
Is TRIR the same as TCIR?
Yes. TRIR (Total Recordable Incident Rate) and TCIR (Total Case Incident Rate) refer to the same OSHA-based metric. Both use the same formula. ISNetworld and most hiring clients use the term TRIR.
When should I update my TRIR in ISNetworld?
Update your ISNetworld safety statistics annually after your OSHA 300A summary is finalized, which must be posted by February 1. Many contractors update immediately after the March electronic submission deadline. Delaying updates can result in flagged accounts or suspended approvals.
Can I improve my ISNetworld grade if my TRIR is high but everything else is strong?
Partially. Since TRIR accounts for about 30% of your grade, strong RAVS scores and a low DART rate can offset some of the damage. But if your TRIR exceeds your hiring client’s hard threshold, no amount of RAVS excellence will override it. The threshold is a pass/fail gate, separate from the weighted grade.
If your ISNetworld TRIR requirements are putting contracts at risk, contact an ISNetworld consultant who can audit your account, verify your data, and build a recovery plan.