I applied in-person. The process took 1 day. I interviewed at IATSE Local 13 (Minneapolis, MN) in Mar 2011
Interview
No process, they have no HR dept, no plan or rules in the office. Virtually anyone who shows up to work can work. You just call the working call steward and ask if they are needing help and depending on the current mood of the person you will probably get to work.