28 C.F.R. § 345.58 Holiday pay.
Title 28 - Judicial Administration
An inmate worker in FPI work status shall receive pay at the standard hourly rate, plus longevity where applicable, for all Federal holidays provided the inmate is in work status on the day before and the day after the holiday occurs. Full-time workers receive one full day's pay. Part-time workers receive one-half day's pay.
Title 28: Judicial Administration
PART 345—FEDERAL PRISON INDUSTRIES (FPI) INMATE WORK PROGRAMS
Subpart F—Inmate Pay and Benefits
§ 345.58 Holiday pay.