(a) No specific form is required. Your request must be in writing and contain the following information:   (1) It must describe the basis for the claim and state the dollar amount you seek to receive;   (2) It must include your name, address, and telephone number;   (3) It must include the name, address, and telephone number of your current or last employer;   (4) It must be signed by you; and   (5) It must include any information you believe OPM should consider, such as cancelled checks or other evidence of amounts you paid.

(b) Send your claim to: Office of Personnel Management, Retirement and Insurance Service, ATTN: FC Section, Washington, DC 20415-3200