The following are few of the links that may be helpful to you in your search for answers:
OWCP's Division of Federal Employees' Compensation has made a variety of forms available online.
Federal Employees' Compensation Procedures Manual
The Federal Employees' Compensation Act provides workers' compensation coverage to three million federal and postal workers around the world for employment-related injuries and occupational diseases.
Contacting Your Federal Employees' Compensation District Office.
Claims for compensation under the Federal Employees' Compensation Act, as amended