CFR›Title 29›Subtitle B›Chapter XL›Part 4050›29 CFR Part 4050 Subpart A Citation29 CFR Part 4050 Subpart AContainsSections § 4050.101–§ 4050.107CorpusDaily eCFRDisplayed edition2026-11-09Last updated2026-11-09 Subpart A—Single-Employer Plans Covered by Title IV Sections § 4050.101 § 4050.101 Purpose and scope. § 4050.102 § 4050.102 Definitions. § 4050.103 § 4050.103 Duties of plan administrator. § 4050.104 § 4050.104 Diligent search. § 4050.105 § 4050.105 Filing with PBGC. § 4050.106 § 4050.106 Missing participant benefits. § 4050.107 § 4050.107 PBGC discretion. Authority29 U.S.C. 1302(b)(3), 1350.Source82 FR 60818, Dec. 22, 2017, unless otherwise noted. Next B Subpart B—Defined Contribution Plans