Chapter 252. AN ACT RELATIVE TO THE SENIORITY OF FIREFIGHTERS. Be it enacted, etc., as follows: The fourth paragraph of section 33 of chapter 31 of the General Laws, as appearing in the 1986 Official Edition, is hereby amended by adding the following sentence:- In determining the seniority of a firefighter for the purpose of reduction in rank or reduction in force, his ranking shall be based on his length of service in the fire department in which such reduction is to take place. Approved July 14, 1987.