5 C.F.R. § 844.301 Commencing date of disability annuity.
Title 5 - Administrative Personnel
A disability annuity under this part commences on the day after the employee separates or the day after pay ceases and the employee meets the requirements for title to an annuity.
Title 5: Administrative Personnel
PART 844—FEDERAL EMPLOYEES' RETIREMENT SYSTEM—DISABILITY RETIREMENT
Subpart C—Computation of Disability Annuity
§ 844.301 Commencing date of disability annuity.