Construction sites are one of the most dangerous work environments in the world. In fact, the construction sector costs three people their lives every single day in the United States alone. It’s because of this enhanced risk that metrics such as total recordable incident rate (TRIR) are closely monitored and used to evaluate construction firms.

*Read on to find out what exactly TRIR is, why it’s such an important metric in the construction sector, how to calculate your TRIR score, as well as steps that general contractors can take to reduce their scores and improve overall site safety.*

**What is TRIR?**

Total recordable incident rate (TRIR) is a measure of occupational health and safety based on the number of safety incidents reported against the number of workers present and the number of hours worked.

TRIR is a metric that was popularized by the Occupational Safety & Health Administration (OSHA) to compare the safety performance of companies within industries or groups. However, many companies also assess TRIR internally to benchmark their safety performance and, over time, assess their safety progress. TRIR can also be used within organizations to compare different divisions or cohorts based on their safety performance.

*That being said, TRIR calculations are not relevant for all industries.*

**The Importance of TRIR in Construction**

TRIR is predominantly used as a metric for goods-producing industries, such as natural resources, mining, construction, and manufacturing. However, TRIR can still be used in service providing sectors such as educational and health services, social assistance, transportation, utilities, information, and more.

However, this article will be focusing on TRIR rates in construction, why they’re important, and what you can do to improve construction site safety and reduce TRIR.

TRIR is an important metric for the construction sector because it is one of the most dangerous industries in the world with respect to both rates of incident as well as fatalities. In fact, construction clocks in at fourth for death rate per 100,000 workers, first for fatalities, fourth for nonfatal injuries per 10,000 workers, and seventh for total nonfatal injuries.

*Here’s how construction stacks up against other sectors:*

But it’s not just the risk and the cost to workers and their families that necessitate TRIR scoring in construction.

**Additional reasons why you need to measure and work to improve your TRIR score include:**

- General contractors and construction managers with publicly poor TRIR scores often see an uptick in inspections by OSHA officers and state regulatory bodies (ex. NYC Department of Buildings). These inspections often lead to more fines and an increased risk of stop work orders, which can be hugely detrimental to project timelines and margins.
- Insurance providers like AXA XL may also factor your TRIR score in with your experience modification rating (EMR), your days away restricted or transferred score, and other key metrics that will determine your rates and premiums.
- Prospective employees and employers alike may also be turned-off by a low TRIR score. Workers might be more inclined to pursue work with a general contractor with a stronger safety record, and asset owners may opt to employ the general contractor with the lower score, as they present less risk.

*Now, let’s see how TRIR is calculated.*

**TRIR Calculation**

According to OSHA, the formula for TRIR is as follows:

**TRIR = Number of incidents x 200,000 / total number of employee hours worked in a year**

*A little confused? Here are some notes regarding the TRIR formula:*

- The 200,000 is the product of the total hours 100 employees would work in 50 weeks based on a 40-hour work week. In other words, it’s an approximation of total hours 100 employees would work in the span of a year.
- When calculating the total number of hours worked for your employees, exclude all vacation hours and employee leave, as these were not actual hours worked. Including these numbers would skew your TRIR.
- All contract workers need to be factored into your calculations. Include their incidents as well as their hours worked for an accurate assessment.

Here is a sample TRIR calculation based on 6 incidents across 500,000 hours worked:

**TRIR = 6 x 200,000 / 500,000**

**TRIR = 2.4**

Now, you are probably wondering what makes a strong TRIR. Here are some benchmarks:

- A perfect TRIR is 0, the product of zero employee accidents/incidents.
- A good TRIR is less than 3.0, with the average TRIR in construction being

*If you’ve calculated your TRIR and score above that 3.0 threshold, that means that you have some work to do.*

**What is a Recordable Incident?**

To effectively calculate your TRIR, you need to understand what constitutes a “recordable incident.” In essence, the answer is anything that must be documented and reported to OSHA.

**According to OSHA, incidents that need to be reported include:**

- Anytime that an employee or worker loses consciousness
- If an incident causes a worker to take on light-duty, activity restrictions, or the need to be transferred to other work.
- If an incident causes a worker to take days away from work.
- If the injury requires medical treatment beyond what a first aid kit can address.
- If any other work-related health issue is diagnosed by a medical professional.

This list is not all encompassing. Visit OSHA’s “Injury and Illness Recordkeeping and Reporting Requirements” to see the complete OSHA Form 300 reporting requirements.

Or check out this video from Summit Safety Group to help you quickly assess whether an incident should be characterized as a first aid situation of an OSHA recordable incident.

**How to Reduce TRIR in Construction**

Construction projects are one serving of complex with two servings of dangerous, the perfect recipe for incidents. Fortunately, there are steps that general contractors and construction managers can take to reduce incidents and improve their TRIR scores.

**1. Implement Preventative Safety Processes**

Reducing TRIR in construction begins with enhancing project site safety. Safety is a large variable, so there are many levers that contractors can pull in order to influence and improve their site experience.

Associations like the Associated Builders and Contractors (ABC) use certain leading metrics to assess the safety of construction firms and grant top performers certification in their STEP program. Founded in 1989 as a safety benchmarking and improvement tool, STEP has grown into a world-class safety management system that assesses members based on 25 key components.

**Some of the leading metrics assessed include:**

- Near misses
- Unsafe acts
- Unsafe conditions
- Substance abuse programs, including drug and alcohol testing
- Toolbox talks
- Site safety orientations
- Management engagement levels
- Supervisor safety training
- Project pre-planning
- Emergency response and fire elimination plans
- Supervisory safety meetings
- Incident investigations and policies
- Safety resources and availability
- Task-specific safety education, and more

Programs like STEP are proven to help general contractors and construction managers to drive safety improvements. **In fact, STEP certified firms experience a 85% reduction in TRIR and are proven to be 655% safer than other firms in their class.**

*Consider applying for STEP to begin your journey towards a stronger TRIR score.*

**2. Validate all Inputs**

Often, one of the easiest ways to reduce your TRIR is by validating all your equation inputs, including OSHA recordable incidents, hours worked, and benchmarking against the proper North American Industry Classification System (NAICS) code.

**Here is how to validate each input:**

- Clarify that all incidents reported are OSHA recordable. Use the Form 300 criterion outlined above to scrutinize and evaluate each incident that you have reported over the past calendar year. This part is critical because the de-classification of one incident can mean dramatic reductions in TRIR rating for many construction companies.
- Ensure that
*all*worker hours are being logged in your assessment, including the hours of all salaried and commissioned workers. This is a mistake that many construction companies and general contractors make and can lead to an inflated TRIR. - Benchmark yourself against the right industry cohort by validating your NAICS code. An industry average of 5.0 versus 4.0 might mean the difference between a “safety conscious” rating and an “unsafe” rating.

**3. Invest in Safety Orientations**

Studies have proven that companies that invest in their site induction processes realize much lower rates of incident, corresponding with safer project sites and a dramatic reduction in TRIR score. In fact, general contractors that conduct in-depth worker indoctrination of safety culture, systems, and processes experience 52-54% lower incident rates than companies that provide basic safety orientations.

*Source: ABC 2021 Safety Performance Report*

**Key assets in comprehensive safety orientations include:**

- Expression of safety commitments as well as an in-depth clarification of expectations and responsibilities on-site.
- Hazard, injury, and emergency communication and reporting procedures.
- Demonstrations of proper usage of all protective gear, safety equipment, and machinery that will be utilized on-site.
- Assignment of a safety mentor to each worker for the duration of the orientation, so that workers can ask questions and get feedback in smaller group settings.
- Safety performances evaluations, assessments, and accurate record keeping to monitor safety performance following the site induction.

One of the best ways to enable more consistent safety orientations is by leveraging available construction technologies. myComply’s Orientations module is built into our robust compliance software for general contractors.

*Source: myComply Orientations*

**With myComply orientations, you can:**

- Create video, image, and text modules to build out your unique orientations’ programs, then administer tests with passing requirements to ensure that workers are retaining knowledge.
- Easily manage general orientations, site-specific orientations, as well as trade and technology specific orientations in one centralized dashboard.
- Create orientations in multiple languages to support local-area needs and requirements.
- Distribute some or all components of your orientations in a digital format to subcontractors.
- Track completions of your orientations modules at the worker level, and use myComply’s Projects Pro and on-site hardware integrations to deny site access or flag any workers that are entering a project site with incomplete training.

**Conclusion**

Construction sites are inherently dangerous environments. However, that doesn’t mean that steps cannot be taken by general contractors to improve key safety metrics and reap the benefits of reduced incidents, fewer site inspections, better insurance premiums, and more.

**Just remember the three keys to improving your TRIR score:**

- Implement preventative processes aimed at improving safety culture
- Validate all your key data points to ensure the accuracy of your score
- Invest in robust site safety inductions

**If you are interested in taking a proactive and preventative approach to improving safety on your construction sites, reducing your incident rate, and slashing your TRIR score, then book a demo with myComply today.**

## FAQs

### How do you calculate total recordable incident rate TRIR? ›

The formula for how to calculate TRIR is simple: **the number of incidents, multiplied by 200,000, then divided by the total number of hours worked in a year**. The number 200,000 is used because it is the total number of hours 100 employees would work in a year (100 workers x 40 hours x 50 weeks).

**How do you calculate Ltir and TRIR? ›**

How to Calculate Lost Time Injury Rate. Lost Time Injury rate follows a simple formula to indicate your performance. **Divide the total number of lost time injuries in a certain time period by the total number of hours worked in that period, then multiply by 200,000 to get the LTIR**.

**What is the total recordable incident rate reported by the company? ›**

Also known as Total Case Incident Rate, **TRIR gives companies a snapshot of their safety performance over a one-year time period by calculating the number of recordable incidents per 100 full-time workers**. The lower your TRIR, the fewer work-related injuries and illnesses experienced by your team.

**What is TRIR score? ›**

What is TRIR? TRIR stands for “**Total Recordable Incident Rate**.” OSHA developed this calculation to gauge a company's safety record compared to its peers. It looks at the number of recordable incidents per 100 full-time workers during a year.

**How do you calculate Trifr? ›**

You are simply combining all of the recorded fatalities, lost time injuries, cases or alternate work and other injuries requiring medical treatment by a medical professional, multiplying that number by 1,000,000, and then dividing that single number by the total number of employee hours worked or 'manhours'.

**How do you calculate total incident rate? ›**

An incidence rate of injuries and illnesses may be computed from the following formula: **(Number of injuries and illnesses X 200,000) / Employee hours worked = Incidence rate**.

**How is TRC rate calculated? ›**

How to calculate your company's TCIR / TRIR ? You can calculate your TCIR or TRIR by using the following formula: **(Number of OSHA Recordable injuries and illnesses X 200,000) / Employee total hours worked = Total Case Incident Rate**.

**What is the average OSHA recordable incident rate? ›**

The incidence rate for total Occupational Safety and Health Administration (OSHA) recordable cases decreased from 2.8 per 100 full-time workers in 2019 to **2.7 in 2020** (-3.6%).

**How do you calculate monthly TRIR? ›**

The TRIR calculation formula **takes the number of recordable injuries and illnesses, multiplies that number by 200,000, and then divides that by the total number of employee hours worked**.

**What is a good OSHA recordable incident rate? ›**

A good TRIR rate is relative to the industry and type of work done, but once you've completed your calculation you can compare it to findings from the Bureau of Labor Statistics (BLS). Overall, the average OSHA Incident Rate is **2.9 cases per 100 full-time employees in private industry**.

### What is a good TRIR number? ›

A good TRIR is **3.0 or less**. A perfect TRIR is zero. Many companies in ISNetworld^{®} will grade your company based on your TRIR score so it is very important that you keep it as low as possible.

**What does TRIR mean in safety? ›**

TRIR (Total Recordable Incident Rate)

**What is the average TRIR for construction? ›**

TOTAL RECORDABLE INCIDENT RATE (TRIR)

For example, in 2018 the average total recordable incident rate for a construction company was 3.0.

**What is considered a high TRIR rate? ›**

Generally, a good TRIR safety rate would be around **3.0 or under** as the average TRIR across the board was 3.1 in 2018, according to the Bureau of Labor Statistics.

**Why is TRIR important? ›**

TRIR, or Total Recordable Incident Rate, is **an OSHA requirement to record job-site incidents, accidents and injuries**. OSHA requires accurate and up-to-date record keeping regarding TRIR each year. Partnering with companies with lower TRIR numbers reduces risk for all parties on-site.

**How do you calculate safety metrics? ›**

Formula: **Accidents / (Hours worked / 10,000)**

**Total Recordable Incidence Rate (TRIR or TRI rate)**: Number of incidents per 100 full-time employees. An incident is typically a nonfatal injury or work-related illness.

**How do you calculate OSHA frequency? ›**

A simple formula for calculating accident incidence (frequency) is to: **Take the total number of recordable incidents for the year from your OSHA 300.** **Multiply that number by 200,000**, which represents the number of hours worked by 100 full-time employees, 40 hours per week for 50 weeks per year.

**How does OSHA calculate hours worked? ›**

The formula is: **Total number of injuries and illnesses ÷ Number of hours worked by all employees x 200,000 hours = Total recordable rate**. The 200,000 figure represents the hours that 100 employees would work during 40-hour weeks, 50 weeks per year.

**How is OSHA lost workday incident rate calculated? ›**

The LWR formula is defined as the total number of workdays lost multiplied by 200,000, divided by the total number of hours worked by all employees within a given period.

**What is incident rate? ›**

An incidence rate **describes how quickly disease occurs in a population**. It is based on person-time, so it has some advantages over an incidence proportion. Because person-time is calculated for each subject, it can accommodate persons coming into and leaving the study.

### How is TRC and dart calculated? ›

The DART rate is calculated using the following formula: **(Number of OSHA Recordable injuries and illnesses that resulted in Days Away; Restricted; Transferred X 200,000) / Employee hours worked = Days Away Restricted Transferred (DART) Rate**.

**What is total case incident rate? ›**

The total case incident rate (TCIR) is a figure that represents the number of work-related injuries per 100 full-time workers over the course of a year. The calculation is based on the number of mandatory reported OSHA recordable injuries and illnesses. Because of this, TCIR is also known as OSHA incident rate.

**What does TCR mean in insurance? ›**

**Transparency in Coverage Rule**/Consolidated Appropriations Act, 2021. July 1, 2022 -- The Transparency in Coverage Rule (TCR) was released in October 2020.

**How do you increase your TRIR? ›**

**5 Ways to Improve TRIR and Job Site Safety Performance**

- Encourage a “Safety-First” Mindset. ...
- Practice Open Communication. ...
- Encourage TRIR Safety With Documentation. ...
- Use the Right Tools and Equipment. ...
- A Way to Improve Your Total Recordable Incident Rate (TRIR)

**How is severity calculated? ›**

The Severity Rate looks at incidents in terms of the actual number of days that were lost on average. To calculate the Severity Rate, you simply **divide the number of lost workdays by the number of recordable incidents**.

**What is the difference between TRIR and RIR? ›**

**Your RIR is the Recordable Injury/Incident Rate.** **(Also referred to as TRIR for total)**. The RIR is formulated from the entries that are made on your OSHA Form 300 log (Appendix A).

**What is the difference between EMR and TRIR? ›**

TRIR vs EMR: Conclusion

The TRIR and the Experience Modification Rate are both used to measure safety performance, but **they are very different metrics in terms of how they are calculated and the data used to determine their measurements**. The EMR is a good, long-term overview of safety performance.

**What does Dart mean in safety? ›**

DART stands for **Days Away, Restricted or Transferred**. The DART rate is an OSHA calculation that determines how safe your business has been in a calendar year in reference to particular types of workers' compensation injuries.

**What is accident formula? ›**

Occupational safety and health administration (OSHA) provides a simple mathematical calculation to determine the accident rate: **Accident rate = (Number of accidents X 200,000) / Number of total employee work hours**. An accident rate is also known as incidence rate.

**What is safety activity rate? ›**

This emphasizes the cost of accident prevention activities against the cost of accident occurrences incidents. Safety Activity Rate = **(safety activity number ) 5 x 106**. **man hours worked x total number of employees present in a year**.

### How do you calculate accidents per 100 employees? ›

The formula for calculating incidents is the number of recorded accidents in that year multiplied by 200,000 (to standardize the accident rate for 100 employees) and then divided by the number of employee labor hours worked. So the formula, again, is **accident rate=(number of accidents*200,000)/number of hours worked**.

**How do you calculate monthly TRIR? ›**

The TRIR calculation formula **takes the number of recordable injuries and illnesses, multiplies that number by 200,000, and then divides that by the total number of employee hours worked**.

**What does TRIR mean in safety? ›**

TRIR (Total Recordable Incident Rate)

**What is a good OSHA TRIR rate? ›**

A good TRIR rate is **relative to the industry and type of work done**, but once you've completed your calculation you can compare it to findings from the Bureau of Labor Statistics (BLS). Overall, the average OSHA Incident Rate is 2.9 cases per 100 full-time employees in private industry.

**What is an OSHA recordable incident rate? ›**

What Does Recordable Incident Rate (RIR) Mean? The Recordable Incident Rate (RIR) is **a mathematical calculation used by OSHA that describes the number of employees per 100 full-time employees that have been involved in an OSHA-recordable injury or illness**.

**How is OSHA lost workday incident rate calculated? ›**

The LWD rate is calculated by **multiplying the total number of lost work days for the year by 200,000, then dividing that number by the number of employee labor hours at the company**. What is now known is that for every 100 employees, 35.21 days were lost from work due to work related injuries or illnesses.

**Why is TRIR important? ›**

TRIR, or Total Recordable Incident Rate, is **an OSHA requirement to record job-site incidents, accidents and injuries**. OSHA requires accurate and up-to-date record keeping regarding TRIR each year. Partnering with companies with lower TRIR numbers reduces risk for all parties on-site.

**How do you calculate safety metrics? ›**

Formula: **Accidents / (Hours worked / 10,000)**

**Total Recordable Incidence Rate (TRIR or TRI rate)**: Number of incidents per 100 full-time employees. An incident is typically a nonfatal injury or work-related illness.

**What is incident rate? ›**

An incidence rate **describes how quickly disease occurs in a population**. It is based on person-time, so it has some advantages over an incidence proportion. Because person-time is calculated for each subject, it can accommodate persons coming into and leaving the study.

**How does OSHA calculate hours worked? ›**

The formula is: **Total number of injuries and illnesses ÷ Number of hours worked by all employees x 200,000 hours = Total recordable rate**. The 200,000 figure represents the hours that 100 employees would work during 40-hour weeks, 50 weeks per year.

### What is the difference between TRIR and RIR? ›

**Your RIR is the Recordable Injury/Incident Rate.** **(Also referred to as TRIR for total)**. The RIR is formulated from the entries that are made on your OSHA Form 300 log (Appendix A).