Safety signs and labels provide information about potential hazards and help prevent accidents and injuries. Chemical and hazardous material signs warn workers of nearby hazards. A construction zone sign informs workers about hazards and entry restrictions. Working with hot surfaces and labels requires fire prevention precautions. Lockout/tagout procedures are outlined in safety signs and labels. Signs and labels promoting safe machine use provide guidance for proper use. Marine and pool safety signs indicate the location of lifeboats and life jackets. Wearing personal protective equipment is emphasized on worker safety signs.