CFR›Title 29›Subtitle B›Chapter XL›29 CFR Part 4219 Citation29 CFR Part 4219ContainsSubparts Subpart A–Subpart CCorpusDaily eCFRDisplayed edition2026-10-21Last updated2026-10-21 PART 4219—NOTICE, COLLECTION, AND REDETERMINATION OF WITHDRAWAL LIABILITY Subparts Subpart A Subpart A—General Subpart B Subpart B—Redetermination of Withdrawal Liability Upon Mass Withdrawal Subpart C Subpart C—Overdue, Defaulted, and Overpaid Withdrawal Liability Authority29 U.S.C. 1302(b)(3) and 1399(c)(6).Source61 FR 34102, July 1, 1996, unless otherwise noted.