N.J. Stat. § 40A:14-47
In municipalities, except cities of the first class, wherein a proposal for a 2-platoon system shall have been adopted the governing body of the municipality, or the board or officer in charge of a paid or part-paid fire department and force, shall divide the paid members and officers of the said department and force into 2 platoons, one designated as a day force, the other as a night force. Each force, respectively, shall alternate the hours of duty on every fourth day. The hours of duty of the day force shall be from 8:00 A.M. to 6:00 P.M. and the night force from 6:00 P.M. to 8:00 A.M. the following morning, except that on every fourth day, for the purpose of such alternation the number of said hours of duty may be exceeded but one force shall be off duty at all times, except as otherwise provided by law.
The 2-platoon system shall be inoperative unless and until a proposal for such a system shall have been submitted to and adopted by the legal voters of the municipality at a primary or general election or at an election held for that purpose. It may be submitted as a public question, in the manner prescribed by law, by resolution of the governing body, or by filing with the governing body of the municipality a petition for such submission signed by at least 10% of the legal voters of the municipality in substantially the following form:
"(Insert the name of the municipality and state the question.)" The ballot shall contain 2 squares to the left of the question, one with the word "Yes", the other with the word "No", respectively, to the right thereof. The ballot shall also contain instructions to voters to vote by marking a cross ( x), or plus sign (+) or check mark ( X) in the square according to their choice. If voting machines are used a vote of "Yes" or "No" shall be equivalent to such markings, respectively.
The municipal clerk shall forthwith canvass the returns of the election and shall certify the results thereof to the governing body of the municipality. If a majority of the legal voters voting on the question shall vote "Yes", the 2-platoon system shall become operative and the governing body or the board or officer in charge of said paid or part-paid fire department and force shall then proceed to establish such system.
This section shall not be construed to repeal or modify in any form any existing law relating to salaries, annual vacations, sick or disability leave of any of the members or officers of the paid or part-paid fire department or force.
N.J.S. § 40A:14-47