Contributions to the Plan Changing Your Contributions. You can change the amount of your pre-tax contributions at any time up to twice each year by submitting the appropriate form to the Fund office. Download Form. The change will be effective as of the first payroll period after receipt, if the form is received at least 15 days prior to the effective date of the change. You can also elect to stop your pre-tax contributions at any time by notifying the Fund office. Contributions will stop with your next paycheck after receipt of the discontinuance form by the Fund office. You can begin participating again on any Entry Date. Flex Benefit Contributions under the UFCW Local 1776 and Participating Employers Flexible Benefits Plan. If you are eligible to participate in the UFCW Local 1776 and Participating Employers Flexible Benefits Plan, you are eligible to elect to have your available Flexible Benefits Plan credits contributed to this Plan. These contributions are generally treated like the pre-tax contributions.