straight forward health and safty advice 
Many work activities  can create potential hazards for other people around you - trailing leads, wet and slippery floors, etc. To avoid exposing people to unnecessary risks make sure that you always display warning signs before you commence such activities. Remember: always place your signs at the points where people are likely to walk into your work area, before you start the work; make sure that the signs can be clearly seen  from all the possible entrances into the work area; corridors often have many doors opening onto them; remember these entrances also need to have a visible warning sign close by; when working in stairwells, only work on one flight of stairs at a time, so as to keep the staircase as free as possible. DO NOT remove any signs until there is no longer a hazard from your work.
Work precautions