Employee status determination requires pension fund and employer to be co-plaintiffs in the dispute.

The court modified the pension board's decision by ordering the pension fund to be added as a co-plaintiff alongside the employer. The pension fund had previously sued independently to determine the employee's coverage under the pension act, but the court found this procedural approach insufficient. Consequently, the court ruled that both the employer and the pension fund must participate jointly to properly resolve the employee's status and applicable pension law.