OSHA allows for the use of work rules in lieu of fall protection on low slope roofs if there is no work or access withing 15’ of the edge of the roof. The employer must document, train and enforce this rule for anyone accessing the roof. Other fall hazards on the roof such as fragile roofs, skylights, and roof hatches may also require protection. This method protection using a work rule is the least effective method of protecting from falls and should only be used if other means of protection are infeasible.