Section 142.33 - Foot protection(a) Personnel working in areas or engaged in activities where there is a reasonable probability for foot injury to occur shall wear footwear meeting the specifications of ANSI Z41, except when environmental conditions exist that present a hazard greater than that against which the footwear is designed to protect.(b) Each pair of footwear must be marked with the information specified by ANSI Z41 for the type of footwear.CGD 79-077, 51 FR 25059, July 10, 1986, as amended at 51 FR 28381, Aug. 7, 1986