CFR›Title 5›Chapter I›Part 831›Subpart E ContainsSections 831.501–831.503CorpusDaily eCFRDisplayed edition2026-04-24Last updated2026-04-24 Subpart E—Eligibility for Retirement Sections 831.501 § 831.501 Time for filing application. 831.502 § 831.502 Automatic separation; exemption. 831.503 § 831.503 Retirement based on involuntary separation. Previous D Subpart D—Voluntary Contributions Next F Subpart F—Survivor Annuities