What Is TCIR
TCIR stands for Total Case Incident Rate. It's calculated by taking the number of recordable injuries and illnesses in a workplace, multiplying by 200,000 (a standard representing 100 full-time employees working 50 weeks per year), then dividing by total hours worked during the measurement period. The result tells you how many recordable incidents occur per 100 full-time workers annually.
OSHA requires employers with 11 or more employees to track and report TCIR on Form 300 (the Log of Work-Related Injuries and Illnesses). This metric applies to workplace incidents only, not home safety situations, though homeowners can use similar tracking principles for private property incident documentation.
Why It Matters
TCIR is one of OSHA's primary compliance metrics. Insurance companies and workers' compensation carriers use your TCIR to set premium rates. A high TCIR signals hazard management problems and triggers regulatory scrutiny. Many facilities aim for a TCIR below 3.0 to remain competitive and avoid increased inspection frequency.
For safety managers, TCIR data identifies whether your incident prevention efforts are working. For homeowners, understanding incident tracking helps you establish whether fall prevention, chemical storage, or fire safety measures are effective.
How to Calculate TCIR
- Count recordable cases: Include injuries and illnesses that require medical treatment beyond first aid, result in lost work time, involve job transfer, or cause restricted duty. Do not count minor cuts treated with bandages or over-the-counter pain relief.
- Multiply by 200,000: This standardization factor accounts for a full year of work hours for 100 employees (100 employees x 40 hours/week x 50 weeks = 200,000 hours).
- Divide by actual hours: Use total employee hours worked during your measurement period (usually a calendar year).
- Interpret the result: A TCIR of 2.5 means 2.5 recordable incidents per 100 full-time workers annually. Compare your rate to your industry average using Bureau of Labor Statistics data by NAICS code.
Workplace Compliance Requirements
Under OSHA recordkeeping rules, you must maintain incident logs for five years following the year they occur. TCIR calculations inform your safety audit program. A rising TCIR suggests gaps in hazard recognition, emergency preparedness drills, or chemical handling procedures. Address root causes through incident investigation, not just recording numbers.
Use TCIR trends alongside your DART Rate (which counts only lost-time injuries) and EMR (Experience Modification Rate) to get a complete safety picture. DART focuses on severity while TCIR captures all recordable events.
Home Safety Tracking
While homeowners aren't required to report TCIR, tracking incidents helps identify problem areas. Document falls, burns, chemical exposures, and fire-related injuries. If you maintain a home workshop or rental property, recording incidents reveals whether your fire extinguishers are accessible, railings are stable, or electrical hazards need attention.
Common Questions
- Does TCIR include first-aid-only injuries? No. OSHA excludes single-visit first aid incidents unless they involve eyewash or irrigation for chemical exposure. A cut treated with a bandage doesn't count; one requiring stitches does.
- How often should we review TCIR? Review quarterly during safety committee meetings. Calculate year-to-date TCIR monthly to catch upward trends early and investigate root causes before they compound.
- What's a good TCIR benchmark? Industry varies significantly. Construction averages around 3.5 to 4.5. Manufacturing around 3.0 to 3.5. Administrative work under 1.0. Compare your facility to your specific NAICS code on the BLS website.