Moving to Maine as a master plumber: every state's rule

Maine issues a statewide Master Plumber license through the same Plumbers' Examining Board. By examination the applicant pays the §3501-B fee and shows either one year / 2,000 hours as a journeyman plumber or four years / 8,000 hours as a trainee plumber under a master (or the equivalent), then obtains a passing grade on the board-approved master's examination (32 M.R.S. §3501(2-A)). A Maine master may supervise trainee plumbers; the trainee license itself is issued without examination to a person employed by a licensed master. Out-of-state masters use the same statutory endorsement process as journeymen (32 M.R.S. §3501-C / 10 M.R.S. §8003-H) when the origin master requirements are substantially equivalent; otherwise they sit the Maine master exam with comparable hours credited. Board applications, fees, exam bulletin and CE rules were not reachable (PFR 404).