Section 395-3-1 - TRAINEE PLUMBERB. A person may apply for licensure as a trainee plumber on forms provided by the board. The application must be accompanied by the license fee set forth in Chapter 10, Section 5(29) of the rules of the Office of Licensing and Registration, entitled "Establishment of License Fees." The minimum age for licensure is 16.C. Whenever a licensed trainee plumber is no longer employed or supervised by a licensed master or journeyman plumber, the trainee plumber may not perform any plumbing work for which a license is required.D. Hours of work accumulated by a trainee plumber shall commence from the date of licensure. Hours completed before a trainee plumber's 16th birthday will not be recognized.