Senate Bill 1489, also known as House Bill 1804, amends Chapter 120 of the Private Acts of 1915, which governs the Town of Mason, by restructuring the town's government. The bill establishes a governing body consisting of a Mayor and six Aldermen, with specific residency requirements for candidates. It outlines the process for filling vacancies, mandates that elected officials assume office on the first Monday in December following their election, and requires them to take an oath of office. Additionally, it sets rules for their compensation, which cannot be altered during their term, and establishes the Board of Mayor and Aldermen's legislative powers, quorum requirements for meetings, and the adoption of Robert's Rules of Order for parliamentary procedure.

The bill further details the roles of the Town Attorney and Town Recorder, with the Town Attorney being appointed by the Board to manage litigation and advise on legal matters, while the Town Recorder is responsible for maintaining accurate records. It also introduces a requirement for the Board to adopt written personnel policies governing employee regulations, which must be reviewed every five years. The bill emphasizes ethical standards and conflict of interest disclosures among Board members and stipulates that it will take effect only upon a two-thirds vote of the Town's legislative body, with certain provisions becoming effective immediately for public welfare purposes.