Floor Openings Floor openings on a job site can occur during construction, renovations or repairs. There may be floor openings as each new floor in a building is added, for personnel and material access, and for stairwells, elevators or skylights. Floor openings are hazardous because workers may fall through them and/or may be struck by objects that fall through openings. Workers should know about floor openings, guarding, and covers, and understand and use the fall protection appropriate to their worksites and job duties. One of the first ways to protect against floor opening hazards is to build floors or place temporary flooring...