{"data":{"id":"us/29-cfr-4221.2","jurisdiction":"us","citation":"29 CFR 4221.2","heading":"Definitions.","body":"The following terms are defined in § 4001.2 of this chapter: ERISA, IRS, multiemployer plan, PBGC, plan, and plan sponsor.\nIn addition, for purposes of this part:\nArbitrator means an individual or panel of individuals selected according to this part to decide a dispute concerning withdrawal liability.\nEmployer means an individual, partnership, corporation or other entity against which a plan sponsor has made a demand for payment of withdrawal liability pursuant to section 4219(b)(1) of ERISA.\nParty or parties means the employer and the plan sponsor involved in a withdrawal liability dispute.\nWithdrawal liability dispute means a dispute described in § 4221.1(a) of this chapter.","path":["Title 29—Labor","Subtitle B—Regulations Relating to Labor","CHAPTER XL—PENSION BENEFIT GUARANTY CORPORATION","SUBCHAPTER I—WITHDRAWAL LIABILITY FOR MULTIEMPLOYER PLANS","PART 4221—ARBITRATION OF DISPUTES IN MULTIEMPLOYER PLANS"],"source_url":"https://www.ecfr.gov/api/versioner/v1/full/2026-08-25/title-29.xml","current_through":"2026-08-25","vintage":"","retrieved_at":"2026-08-27T02:25:20Z","sha256":"96f9e9650056bf768f2ed7115042e99849cc7ad6b3be2718b72561905b054bf0","source_id":"us-cfr","stale":true,"prev":"us/29-cfr-4221.1","next":"us/29-cfr-4221.3"},"notice":"GroundRules: Original legal text. Not legal advice."}