Home › CFR › Title 26 › Part 31 › §31.3231(d)-126 CFR §31.3231(d)-1 — (d)-1 Service.Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy linkSee § 31.3231(b)-1 for regulations relating to the term “in the service of an employer.”