CFR›Title 29›Subtitle B›Chapter XL›Part 4050›Subpart A ContainsSections 4050.101–4050.107CorpusDaily eCFRDisplayed edition2026-05-07Last updated2026-05-07 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. Next B Subpart B—Defined Contribution Plans