Through a payroll audit a large multiemployer defined benefit plan discovered that a participating employer was making improper contributions to the plan for several years. It appears that the employer was requiring employees covered by the CBA to "elect" to participate in the plan and then was taking money from those employees' checks on an after tax basis to make contributions to the plan. The plan does not allow for acceptance of any kind of after tax contributions.
Obviously, the plan can no longer accept these contributions. My concern, however, is what the plan is required to do with those contributions it has already received from the employer. Can the plan simply refund the contributions to the employer and notify the participants about what happened and inform them they have not accrued any benefits under the plan? Should the plan approach the IRS regarding the proper correction procedure?
Any thoughts would be greatly appreciated.