Know where it is, find out if its functional and ask who will use it in an emergency
All around us we see a lot of construction going on, most often high raise buildings which need to be painted. We often see the painters sitting on the ledge, or a ladder and trying to reach out to paint. I was impressed with this painter who was seated comfortably on a platform, he also had a makeshift harness to prevent him from falling. He was helped by his co-worker who was controlling the harness (not seen in the picture).
This is one level of safety but it can certainly go a next level with use of appropriate PPE and an actual safety harness.