Foundation, structure, and building exterior contractors (NAICS 2381): average TRIR and DART
These are the 2024 private-industry incidence rates from the U.S. Bureau of Labor Statistics, per 100 full-time-equivalent workers. Prequalification forms often ask whether your TRIR and DART are at or below these numbers.
Other recordable cases: 0.8. "Not published" means the data does not meet BLS publication guidelines.
What this means for your prequal form
Worked example: a company in this industry with 100,000 hours worked in a year (about 50 full-time employees) would match the industry average at 1.3 recordable cases. With 400,000 hours (about 200 employees) the figure is 5.2.
TRIR = recordable cases × 200,000 ÷ hours worked. DART = (days-away cases + restricted/transfer cases) × 200,000 ÷ hours worked. Use your OSHA 300A totals for each calendar year.
Parent industry: Specialty trade contractors (NAICS 238), TRC 2.3, DART 1.4.
Detailed industries under NAICS 2381
| NAICS | Industry | TRC | DART |
|---|---|---|---|
| 23811 | Poured concrete foundation and structure contractors | 2.8 | 2.0 |
| 23812 | Structural steel and precast concrete contractors | 2.8 | 1.3 |
| 23813 | Framing contractors | 4.6 | 3.4 |
| 23814 | Masonry contractors | 1.9 | 1.5 |
| 23815 | Glass and glazing contractors | 2.7 | 1.5 |
| 23816 | Roofing contractors | 2.4 | 1.7 |
| 23817 | Siding contractors | 3.2 | 2.5 |
Source: BLS Survey of Occupational Injuries and Illnesses, Table 1 (2024). NAICS 2017 codes as published by BLS.