This bill, known as the Federal Firefighters Families First Act, seeks to enhance pay equality and improve retirement benefits for federal firefighters. Its primary goals include boosting recruitment and retention within the federal fire service by ensuring more accurate compensation and retirement calculations. The legislation amends existing law to adjust the computation of federal firefighter pay by changing a specific hourly divisor. Crucially, it mandates that a portion of regularly scheduled overtime hours be included when determining a firefighter's average pay for retirement benefit calculations, thereby increasing their annuity entitlements. This change applies to separations from service occurring 60 days after the bill's enactment. Furthermore, the bill directs the Office of Personnel Management to establish regulations within one year to define the maximum number of regularly recurring hours for a federal firefighter's workweek. This maximum is set not to exceed an average of 60 hours per week, aiming to standardize work schedules and improve working conditions for these essential federal employees.