The Office of Personnel Management (OPM) is proposing to add prescribed wildland fire activities to the Firefighting Hazardous Duty Pay (HDP) category for General Schedule employees and Firefighting Environmental Differential Pay (EDP) category for Federal Wage System employees, for firefighting activities on the fireline related to the preparation, implementation, and on control on prescribed wildland fires. OPM is adding these activities to the HDP and EDP Firefighting categories so that Federal agencies may provide additional compensation to Federal firefighters who are exposed to unusual health risks caused by working in close proximity to prescribed burn wildfires.