That said, the clothing is very traditional but still being worn by modern carpenters. I have a friend who does the job, and he always wears those clothes for work. Usually, without the hat and the stick, those are mostly added only for the waltz, however only based on my limited knowledge, I've never been a carpenter here.
these guys are supposed to be working outside, on top of roofs, etc.
the bellbottoms protect you from stuff falling into your boots. sawdust, nails, water, etc.
the hat protects you from sun, etc.
this uniform is meant as the only thing that you travel in. those guys walk and tramp across the country or even europe. their outfit is multifunctional and very, very old. it is meant to make you standout, it signals who you are and what you're doing.