CFR > Title 29 - Labor > SUBTITLE B—Regulations Relating to Labor > CHAPTER XL—PENSION BENEFIT GUARANTY CORPORATION (parts 4000 to 4907) > SUBCHAPTER I—WITHDRAWAL LIABILITY FOR MULTIEMPLOYER PLANS (parts 4203 to 4221) > PART 4211—ALLOCATING UNFUNDED VESTED BENEFITS TO WITHDRAWING EMPLOYERS > SUBPART A—General (§4211.1 to §4211.4)