Claim for withdrawal liability

Section 503(b) of title 11, United States Code, as amended by section 103 of this Act, is amended by adding at the end the following: (12) with respect to withdrawal liability owed to a multi-employer pension plan for a complete or partial withdrawal pursuant to section 4201 of the Employee Retirement Income Security Act of 1974 (29 U.S.C. 1381) where such withdrawal occurs on or after the commencement of the case, an amount equal to the total benefits payable from such pension plan that accrued as a result of employees’ services rendered to the debtor during the period beginning on the date of commencement of the case and ending on the date of the withdrawal from the plan..