CFR›Title 29›Subtitle B›Chapter XL›Part 4063 ContainsSection 4063.1CorpusDaily eCFRDisplayed edition2026-04-15Last updated2026-04-15 PART 4063—WITHDRAWAL LIABILITY; PLANS UNDER MULTIPLE CONTROLLED GROUPS Sections 4063.1 § 4063.1 Cross-references. Authority29 U.S.C. 1302(b)(3).Source61 FR 34082, July 1, 1996, unless otherwise noted. Previous 4062 Part 4062—Liability for Termination of Single-Employer Plans Next 4064 Part 4064—Liability on Termination of Single-Employer Plans Under Multiple Controlled Groups