How to Apply for Disability Retirement: Forms, Deadlines, and Appeals

To apply for federal disability retirement, file the SF 3112 disability package together with SF 3107 (if you are covered by FERS) or SF 2801 (if you are covered by CSRS), attach medical evidence showing your condition will last at least one year, and submit the package through your agency’s human resources office if you are still employed or directly to the Office of Personnel Management if you have separated. FERS applicants must also file for Social Security Disability Insurance. OPM typically takes six to twelve months to decide, so accuracy on the first submission matters.

Confirm Whether You Are FERS or CSRS

The retirement system that covers you determines which application form you use and how much prior service you need. Most current federal employees are under the Federal Employees Retirement System, which has covered new hires since 1987. Longer-tenured employees may still be under the Civil Service Retirement System. Your most recent SF-50 (Notification of Personnel Action) shows which system applies, and your HR office can confirm it. Settle this before you start on paperwork.

Eligibility

Both systems apply the same medical standard: OPM must find that you are unable, because of disease or injury, to render useful and efficient service in your current position. In practice that means either a documented deficiency in performance, conduct, or attendance tied to the condition, or evidence that the condition is otherwise incompatible with continued service.¹ The condition must be expected to last at least one year from the date you file.²

The service minimums differ. FERS requires 18 months of creditable federal civilian service.² CSRS requires five years.³

The Reassignment Trap

Before your agency can certify you for disability retirement, it must consider whether a reasonable accommodation would let you keep doing your current job and whether any vacant position at the same grade or pay level in your commuting area could be offered instead. Declining a reasonable reassignment offer that meets those criteria makes you ineligible under FERS.² Turning down an accommodation or reassignment the agency can document as reasonable will sink an otherwise strong claim.

The Deadline That Matters

While you are still on your agency’s payroll, no calendar deadline forces your hand, though long gaps between medical treatment and filing invite skepticism from the adjudicator. The firm deadline hits once you leave: your application must be received by OPM or your former agency within one year of your separation date.⁴ Miss it and the door closes permanently. If you were removed for cause or resigned because of a medical condition, the one-year clock runs from the effective date of separation.

The Forms You Need

Every application has two main parts: the retirement application itself and the SF 3112 disability package.

SF 3107 or SF 2801

FERS employees file SF 3107 (Application for Immediate Retirement). CSRS employees file SF 2801. This form captures personal information, service history, and beneficiary designations, and it officially triggers the retirement process.⁵

The SF 3112 Package

The SF 3112 is the heart of the claim. It has five parts, each completed by a different person:

SF 3112A, Applicant’s Statement of Disability. Your written explanation of how the medical condition prevents you from doing your job.
SF 3112B, Supervisor’s Statement. Your immediate supervisor describes your duties, any observed performance or attendance problems, and accommodation efforts.
SF 3112C, Physician’s Statement. Your treating doctor provides the diagnosis, clinical findings, prognosis, and an opinion on how the condition affects your work capacity.
SF 3112D, Agency Certification. Your agency confirms what reassignment and accommodation efforts were made and whether suitable vacant positions exist.
SF 3112E, Checklist. A final verification that every required document is included.

All five parts are available on the OPM website or through your HR office.⁵ Download them together so you can cross-reference sections while drafting your materials.

Medical Records

Beyond the physician’s statement on SF 3112C, include full medical records: clinical notes, diagnostic test results, imaging reports, and treatment histories. The records need to tell a coherent story that starts when the condition began, traces how it progressed, and shows why it prevents you from performing specific duties. Bare diagnoses without functional limitations are the most common gap OPM flags. A letter stating you have degenerative disc disease means little on its own; the file needs to show that the condition limits you from sitting for extended periods, lifting above a certain weight, or whatever your position requires.

Requesting copies from providers can take several weeks and may involve per-page fees that vary by provider and state. Start gathering records early. If you have seen multiple specialists, collect records from each; a single doctor’s file rarely captures the full picture.

Writing SF 3112A Well

The applicant’s statement is the one part you fully control, and it is the part most people underwrite. Vague language like “I can’t do my job because of pain” gives the adjudicator nothing to work with. Match each major duty from your position description to the specific symptom or limitation that prevents you from performing it. If your job requires reviewing lengthy financial documents and your medication causes cognitive impairment that makes sustained concentration impossible, say exactly that. If your duties involve standing for hours and your condition limits you to ten minutes at a time, include the number.

Every date and personal identifier on SF 3112A must match your official personnel records exactly. A mismatched Social Security number or inconsistent date of birth can trigger administrative rejection before the adjudicator ever reaches your medical evidence. Cross-check your SF-50 and service computation date before finalizing.

The strongest applications read as one unified narrative across all five SF 3112 forms. If your doctor describes limitations on SF 3112C that you never mention on SF 3112A, the disconnect raises doubts. Share your draft statement with your physician before they complete their section so the language lines up.

Where to Send the Application

If you are still a federal employee, submit the entire package to your agency’s HR office. The agency adds its certifications, including SF 3112D, attaches your Individual Retirement Record, and forwards everything to OPM.¹

If you have been separated for more than 31 days, your former agency may no longer have your records at hand. Mail the application directly to: Office of Personnel Management, Federal Employees Retirement System, Retirement Operations Center, Boyers, PA 16017-0001.¹ Send it certified with return receipt requested. Some agencies have digital submission portals; check with HR before defaulting to paper. Keep a complete copy of the signed package either way. If anything is lost in transit, you need to reproduce it immediately.

FERS Applicants Must Also File for SSDI

FERS disability retirees are required to apply for Social Security Disability Insurance in addition to the OPM application. Submit proof of filing, either a receipt from the Social Security Administration or a notice of approval or denial, with your retirement package or as soon as possible afterward.⁶ This is not optional. OPM uses your SSDI status to calculate your annuity, because FERS disability payments are reduced by a portion of any Social Security disability benefit you receive.

Whether Social Security approves or denies your claim does not control OPM’s decision. The two agencies apply different standards. Social Security looks at whether you can do any substantial work in the national economy; OPM only considers whether you can do your specific federal job. Approval by one and denial by the other is common in either direction.

After You File

OPM sends an acknowledgment that includes a unique claim identification number, called a CSA number (or CSF number). Use it on every piece of correspondence going forward.⁷ The first stage is an administrative review confirming that every required form is present and signed. If something is missing, OPM sends a development letter requesting it, and processing effectively pauses until you respond.

Once the package is complete, a disability specialist evaluates the medical evidence against the legal standard and reviews the agency’s certification of reassignment efforts. The full process typically takes six to twelve months, and backlogs can stretch it further. During the wait, OPM may issue interim annuity payments at roughly 80 percent of the estimated final amount. When the final decision comes, approved applicants receive a formal award letter, and payments are adjusted to the correct rate with retroactive pay back to the effective retirement date.

If OPM Denies the Claim

A denial is not the end. Most initial denials come from incomplete medical evidence rather than a fundamental eligibility problem, and the reconsideration stage is where many claims that failed the first time succeed.

Reconsideration

You have 30 calendar days from the date of OPM’s initial decision to request reconsideration.⁸ OPM can extend the deadline if you were not notified of the time limit or if circumstances beyond your control prevented timely filing, but do not count on it. Use the 30 days to obtain stronger medical evidence that directly addresses whatever gap the denial letter identified. Resubmitting the same paperwork rarely changes the outcome.

Merit Systems Protection Board

If OPM denies your claim a second time after reconsideration, you can appeal to the Merit Systems Protection Board, an independent federal agency that reviews OPM decisions under procedures the Board prescribes.⁸ You can also bypass reconsideration and appeal directly to the MSPB after an initial final decision, though most applicants benefit from the reconsideration stage first because it lets them supplement the record before going to an independent tribunal. At the MSPB level, many applicants retain an attorney, because the proceedings resemble a formal adjudication more than a paperwork review.

1
U.S. Office of Personnel Management. Information About Disability Retirement (FERS)
2
Office of the Law Revision Counsel. 5 USC 8451 – Disability Retirement
3
Office of the Law Revision Counsel. 5 USC 8337 – Disability Retirement
4
U.S. Office of Personnel Management. Types of Retirement
5
U.S. Office of Personnel Management. Documentation in Support of Disability Retirement Application
6
OPM.gov. Chapter 60 – Disability Retirement
7
U.S. Office of Personnel Management. Where to Find Your OPM Retirement Claim Number
8
OPM.gov. Chapter 3 – Reconsideration and Appeal