Archive Notice - OSHA Archive

NOTICE: This is an OSHA Archive Document, and may no longer represent OSHA Policy. It is presented here as historical content, for research and review purposes only.

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. This 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. To keep apprised of such developments, you can consult OSHA's website at

August 31, 1978

Mr. W. C. Bailey
Director of Safety Stone and Webster Engineering Corporation
245 Summer Street
Post Office Box 2325
Boston, Massachusetts 02107

Dear Mr. Bailey:

This is in response to your recent telephone inquiry to the Occupational Safety and Health Administration concerning physical qualification requirements for crane operators. This also confirms a telephone conversation with Ms. Preston, of our staff.

Physical qualifications for crane and derrick operators are safety related and required. However, OSHA requirements for Crawler, Locomotive, Truck and Derrick operators are limited to the following:

(1) Have vision of at least 20/30 Snellen in one eye, and 20/50 in the other, with or without glasses. Exception:

Derrick operators shall have adequate vision with or without glasses for the specific operation.

(2) Be able to distinguish red, green, and yellow, regardless of position of colors, if color differentiation is required for operation.

(3) Hearing, with or without hearing aid, muse be adequate for the specific operation.

(4) A history of epilepsy or of a disabling heart condition shall be sufficient reason for his disqualification.

Thank you for your continuing interest in occupational safety and health. If we can be of any further assistance, please contact us.


Bruce Hillenbrand
Acting Director,
Federal Compliance
and State Programs