The Membership Application for the Member Contribution Plan must be accompanied by a signed Salary Reduction Agreement (Form A-13a). Any amounts withheld before this agreement is signed will not be accepted. Submit this form during the month before the pay period in which the employee would like to have the money withheld. Example: Your payroll period is every two weeks and the member wants member contributions to start during the February 5-19 pay period. In order for the withholding to be treated as a pre-tax member contribution, MMBB must receive a properly filled out and signed Salary Reduction Agreement by the end of the previous month.