Does OSHA require safety signs?

Yes. OSHA 29 CFR 1910.145 requires signs to indicate and define specific hazards that could harm workers or the public, and specifies designs for danger, caution and safety instruction signs. Other OSHA standards add sign requirements for specific hazards such as confined spaces and exits.

What are the OSHA safety sign colors?

Under 29 CFR 1910.145 and ANSI Z535.1, danger signs are red, black and white; caution signs are yellow with black lettering; and safety instruction signs are white with a green panel. The ANSI Z535 formats recognized by OSHA add orange warning signs and blue notice signs.

What changed in OSHA's 2013 sign regulation update?

OSHA's 2013 update to 1910.145 incorporated the ANSI Z535 standards as an accepted approach to sign design, allowing the expanded signal word formats, symbol panels and message layouts that define best practice signs today.

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