A workplace should have a roof, proper flooring, entry and exit points, along with sufficient space for movement during emergency. The floor surface should be flat, stable and dry; it should be appropriate for the nature of work involved. The workplace should also have good lighting and ventilation, so that workers are safe and they breathe clean air. It is also necessary to protect the workers from extreme weather while working. A space for dining, rest places for sick workers, drinking water facilities, and toilets and hand-washing facilities are some of the other basic requirements in the workplace.