It's the Law...
OSHA 29 CRF 1910.147(b) Tagout Devices. A prominent warning device, such as a tag...to indicate that the energy isolating device and the equipment being controlled may not be operated until the tagout device is removed...
...(c)(5)(ii)(A)(2) Tagout devices shall be constructed and printed so that the exposure to weather conditions or wet and damp locations will not cause the tag to deteriorate or the message on the tag to become illegible...
...(c)(5)(ii)(D) Identifiable...tagout devices shall indicate the identity of the employee appliying the device(s)...
...(d)(4)(iii) Tagout devices, where used shall be affixed in such a manner as will clearly indicate the the operation or movement of energy isolating devices from the "safe" or "off" position is prohibited...
