If I'm doing tree work on a construction site, possibly. I'll have to check into that. Just because I'm in a tree, say homeowners backyard. I believe no. Right now these rules are mandatory for the "construction" industry. WSIB is mandatory for the construction industry. It is not mandatory for us, it's "By Application", not mandatory. I'm not advocating not having training or comp. just stating how different we are from "construction" in the governments eyes. OHS rules govern us as do some sections of Construction, Forestry and Industrial. I believe that the industry specific training that I have for doing the work that I do is sufficient for the work that I do.