Of course one must file for SSDI (Social Security Disability benefits) when a Federal or Postal employee under FERS (the Federal Employees Retirement Systems, as opposed to CSRS, the Civil Service Retirement System) files for Federal Disability Retirement benefits. If approved by Social Security, there is a 100% offset of benefits in the first year, and a 60% offset of benefits every year thereafter until age 62. The real underlying question for most people, is how aggressively one should, or one wants to, pursue Social Security benefits. This is often determined by what one plans to do after becoming a Federal Disability Retirement annuitant. For, if you plan to work part or full time, and think that you will be earning more than the yearly ceiling allowable under SSDI, which is around $12,000.00 per year, then it is probably not worthwhile to pursue it very aggressively. On the other hand, if you plan on relying exclusively on your disability annuity, it is probably a good idea to pursue it with the intent of obtaining it.
Robert R. McGill, Esquire