Cleanliness and hygiene duties require construction employers to maintain sanitary sites, remove waste, prevent obstructions, and protect workers. Every employer engaged in building or other construction work must keep the work site, premises, and surroundings clean, hygienic, and sanitary, provide proper storage for materials and equipment, remove scrap, waste, and debris at appropriate intervals, and prevent loose materials from obstructing access, egress, or passageways. Slippery workplaces must be cleaned or treated, wet floors must have effective drainage and remain dry and non-slippery, suitable safety and protective gear must be provided free of charge, and daily waste collection, storage, disposal, or treatment must be arranged under effective supervision.