1926.100: Head Protection in Construction
Employers must protect workers with hard hats wherever there is a possible danger of head injury from impact, falling or flying objects, or electric shock and burns. Hard hats must meet ANSI Z89.1 specifications or be shown to be equally effective. Workers exposed to high-voltage shock and burns need hard hats that also meet electrical insulation requirements.
Key takeaways
- 1926.100 is part of OSHA's construction standards (29 CFR Part 1926, Subpart E).
- OSHA cited it 3,641 times in the last 3 years, in 3,638 inspections, with $8,886,921 in current penalties.
- 31 deaths are linked to inspections that cited this rule.
- Most citations: TX (484), MD (405), IL (376).
- Most-cited part: 1926.100(a) (3,641 citations).
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In this article
What this rule covers
29 CFR 1926.100, "Head protection", is an OSHA construction standard (Part 1926, Subpart E). It has 8 numbered paragraphs. The official text below is copied word for word from the Electronic Code of Federal Regulations (eCFR). The numbers, injury cases and training on this page show how OSHA enforces it on real job sites.
Official text
Show the full text of 1926.100 (8 paragraphs)
(a) Employees working in areas where there is a possible danger of head injury from impact, or from falling or flying objects, or from electrical shock and burns, shall be protected by protective helmets. Open (a) 3,641 citations
(b) Criteria for head protection. Open (b)
(1) The employer must provide each employee with head protection that meets the specifications contained in any of the following consensus standards:
(i) American National Standards Institute (ANSI) Z89.1-2009, “American National Standard for Industrial Head Protection,” incorporated by reference in § 1926.6;
(ii) American National Standards Institute (ANSI) Z89.1-2003, “American National Standard for Industrial Head Protection,” incorporated by reference in § 1926.6; or
(iii) American National Standards Institute (ANSI) Z89.1-1997, “American National Standard for Personnel Protection—Protective Headwear for Industrial Workers—Requirements,” incorporated by reference in § 1926.6.
(2) The employer must ensure that the head protection provided for each employee exposed to high-voltage electric shock and burns also meets the specifications contained in Section 9.7 (“Electrical Insulation”) of any of the consensus standards identified in paragraph (b)(1) of this section.
(3) OSHA will deem any head protection device that the employer demonstrates is at least as effective as a head protection device constructed in accordance with one of the consensus standards identified in paragraph (b)(1) of this section to be in compliance with the requirements of this section.
[44 FR 8577, Feb. 9, 1979, as amended at 77 FR 37600, June 22, 2012; 77 FR 42988, July 23, 2012]
Source: eCFR, text current as of 2026-10-15.
Export the list: 3,638 inspections cited 1926.100 in the last 3 years, with employer, location, penalty and date.
Purple Belt, $59/moInjuries linked to this rule
31 deaths are linked to inspections where OSHA cited 1926.100.
At 11:30 a.m. on February 28, 2025, Employee #1 and Employee #2 and Coworker #1 and Coworker #2 , were applying CTS Cement Rapid Set Mortar Mix on an exposed fieldstone foundation wall to reinforce the deteriorating wall. The crew was working inside a trench…
Full case list with employer, penalty, filters and download is part of OSHA Data (Purple Belt).
Unlock with Purple BeltWhere and how often it was cited
| Year | Citations |
|---|---|
| 2023 | 210 |
| 2024 | 1,280 |
| 2025 | 1,328 |
| 2026 | 823 |
Top states: TX (484), MD (405), IL (376), MI (368), NC (235)
Largest penalties
| Employer | Location | Penalty for this rule |
|---|---|---|
| THOMAS BUILDERS OF VIRGINIA, INC. | WAYNESBORO, VA | $158,725 |
| THOMAS BUILDERS OF VIRGINIA, INC. | LYNCHBURG, VA | $153,740 |
| THOMAS BUILDERS OF VIRGINIA INC. | LYNCHBURG, VA | $142,691 |
| THOMAS BUILDERS OF VIRGINIA, INC. | FOREST, VA | $142,691 |
| WAGNER CONSTRUCTION INC | MINOT, ND | $92,814 |
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OSHA interpretation letters
None exist. OSHA has not published a letter of interpretation for 1926.100.
Most-cited parts of this rule
- 1926.100(a) 3,641 citations
- 1926.100(b) Criteria for head protection
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Frequently asked questions
When are hard hats required in construction?
When there is a possible danger of head injury from impact, falling or flying objects, or electrical shock and burns.
What standard must hard hats meet?
ANSI Z89.1 (the 2009, 2003 or 1997 edition), or the employer must show the hard hat is at least as effective.
Do electrical workers need a special hard hat?
Yes. Head protection for workers exposed to high-voltage shock and burns must also meet the electrical insulation section of the ANSI standard.
About this page
Sources
- 29 CFR 1926.100 (eCFR), text current as of 2026-10-15
- U.S. Department of Labor enforcement data: OSHA inspections, citations and accident records, copied nightly; data as of 2026-11-06
3-year window. Federal OSHA only; state-plan rules are not counted. Plain-language text is a summary, not legal advice; the official text controls. Black Belt Safety is not part of OSHA or the Department of Labor.