02-395-3 Me. Code R. § 9
A license may be renewed up to 90 days after expiration upon payment of the late fee set forth in Chapter 11, Section 2(1) of the rules of the Office of Licensing and Registration, entitled "Late Renewals" along with the license fee.
A master plumber or journeyman plumber who fails to renew a license more than 90 days but less than 2 years after expiration may reinstate the license without taking the examination by filing a new application for renewal and paying the license fee, the late fee set forth in Chapter 11, Section 2(1) of the rules of the Office of Licensing and Registration, entitled "Late Renewals," and the additional late fee set forth in Chapter 10, Section 5(29) of the rules of the Office of Licensing and Registration entitled "Establishment of License Fees."
An applicant who fails to renew a license 2 years or longer after expiration must apply for initial licensure pursuant to Section 6 of this chapter, meet the qualifications for initial licensure in effect at the time of the application and pass the appropriate examination.
[NOTE: Reinstatement of an expired license held by a plumber separating from the United States Armed Forces may be governed by 32 MRSA §3504.]
02-395 C.M.R. ch. 3, § 9