CFR›Title 29›Subtitle B›Chapter XL›Part 4043 ContainsSubparts A–DCorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 PART 4043—REPORTABLE EVENTS AND CERTAIN OTHER NOTIFICATION REQUIREMENTS Subparts A Subpart A—General Provisions Sections 4043.1–4043.10 B Subpart B—Post-Event Notice of Reportable Events Sections 4043.20–4043.35 C Subpart C—Advance Notice of Reportable Events Sections 4043.61–4043.68 D Subpart D—Notice of Failure To Make Required Contributions Section 4043.81 Authority29 U.S.C. 1083(k), 1302(b)(3), 1343.Source80 FR 55002, Sept. 11, 2015, unless otherwise noted. Previous 4042 Part 4042—Single-Employer Plan Termination Initiated by PBGC Next 4044 Part 4044—Allocation of Assets in Single-Employer Plans