40.1 The Contractor may not assign the contract without the prior written consent of the contracting authority. Any assignment without such consent is invalid and has no effect. The assignment takes effect upon the conclusion of an assignment agreement signed by the parties and the assignee. The terms and conditions are addressed to all potential suppliers interested in transactions with the Public Utilities Commission (PSC) and are incorporated into all PSC contractual agreements. You use this employee commission contract in addition to an employment contract. Maybe you use a standard employment contract for all your employees and want to avoid changing it. You may have decided to sell a particular employee on commission. You may have a union agreement on employment contracts.