This document contains a final rule implementing section 101(k) of the Employee Retirement Income Security Act of 1974, as amended by the Pension Protection Act of 2006. Section 101(k) requires the administrator of a multiemployer plan to provide copies of certain actuarial and financial documents about the plan to participants, beneficiaries, employee representatives and contributing employers upon request. The final rule affects plan administrators, participants and beneficiaries and contributing employers of multiemployer plans.