Workplace ventilation and temperature control require factories to maintain safe air quality, protect workers, and manage heat exposure. Employer of every factory must maintain suitable atmospheric conditions, provide adequate ventilation, protect employees from extreme weather conditions, and ensure suitable temperature and humidity in workrooms. Mechanical ventilation must be provided where natural ventilation is insufficient, heating apparatus must be arranged to keep combustion gases out of the room, and workers exposed to excessive heat must be protected by insulation or other suitable means against heat radiation and hot surfaces.