On a roof, all care is little. Some guidelines ensure that the day ends well. To climb, stairs must be firm and adequate for service. If the work is near openings or edges, it will need signage.
If it is an aged roof, poorly supported and in poor condition, it is best not to take any steps. On fiber cement tiles, step slowly. The board must be well maintained and well positioned.
If the surface is sloping or damp, be careful not to fall.
Personal protective equipment is essential for workers. But those who pass under the roof on construction sites are also at risk. Therefore, install walkthroughs or isolate the area.