Workers often have to climb to heights above ground level when they are building structures. When they do this, the tools that they use, as well as themselves, can become hazards to the people who are on the levels below them. There are some very specific ways that construction workers can help prevent these objects from killing or injuring others.
It is up to every construction company to have protocol in place to prevent falling object hazards. All of the workers for that company must comply with those protocol if they are working above ground level.