Letters of Interpretation

OSHA requirements are set by statute, standards, and regulations. Our interpretation letters explain these requirements and how they apply to particular circumstances, but they cannot create additional employer obligations. Each letter constitutes OSHA's interpretation of the requirements discussed.

Note that our enforcement guidance may be affected by changes to OSHA rules. Also, from time to time we update our guidance in response to new information.

These letters of interpretation and the standards they address may not apply to OSHA State Plans. State Plans are required to have standards and enforcement programs that are at least as effective as OSHA's and may have different or additional requirements. Please see OSHA-approved State Plans for more information.

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Date Title Standard Number
Medical Services and First Aid. 1910.151
Standard requirements for eyewash and shower equipment, personnel and other protective equipment and air circulation fans, used in an automotive battery charging area 1910.132, 1910.133, 1910.151, 1910.178, 1910.303, 1910.307
OSHA does not certify first aid training programs, instructors or trainees. 1910.151
Interpretation of the term "in near proximity". 1910.151(b)
First Aid in the workplace. 1910.151, 1910.266(c)(1)(vii)
Plumbed emergency eyewash requirements as they apply to faucet-mount emergency. 1910.151
Definitions for "near proximity" and "serious injury". 1910.151(b)
Clarification on first aid requirements for hazardous waste sites. 1910.120, 1910.120(e)(3)(ii), 1910.120(l)(2)(viii), 1910.151, 1910.151(b), 1910.1030
First Aid program requirements where a medical facility is near the workplace. 1910.151
OSHA's position regarding compensating time spent taking employer-sponsored medical exams. 1910.151
Response time and "in near proximity" requirements. 1910.151
Settlement agreement regarding the use of elbow splints. 1910.151, 1910 Subpart I
Employee training in first aid. 1910.151
Medical services and first aid. 1910.151, 1910.151(a)
Eyewash fountain in OSHA compliance. 1910.151
Successful completion of a first aid course demonstrated by means other than a written knowledge test. 1910.151
Eyewash and shower equipment in construction. 1910.151
Employees who become ill or injured on the job. 1910.151
Standard for medical services and first aid 1910.151
Guidelines for First Aid Training Programs. 1910.151, 1926.50, 1915.98, 1918.97, 1917.26