From the Document: "This In Focus describes all but one of the pension provisions in Title IX, Subtitle H, of the American Rescue Plan Act of 2021 (P.L. 117-2). [...] Multiemployer defined benefit (DB) pension plans annually certify the plan's financial status--known as the plan's 'zone status'. A plan can be in 'endangered', 'seriously endangered', 'critical', or 'critical and declining' status (or no category if none of these apply). Multiemployer DB plans that report a status other than no category must take measures to improve their financial condition. Section 9701 permits plans to keep their zone status from the previous plan year, at the discretion of the plan, for either (1) the first plan year beginning during the period from March 1, 2020, through February 28, 2021, or (2) the succeeding plan year."
CRS In Focus, IF11766
Congressional Research Service: https://crsreports.congress.gov/