When I was working construction many years ago there was an urban legend about a guy that always looked busy running around with some tools, but no one ever saw

When I was working construction many years ago there was an urban legend about a guy that always looked busy running around with some tools, but no one ever saw him actually working. Turned out he used to find himself a hidden spot at the site and sleep there most of the day. Just making sure to walk across the site with tools once in a while.