Final answer:
Interest arbitration is the dispute resolution process typically undertaken when employees are picketing, as it deals with the terms of a new contract and involves an arbitrator making a binding decision.
Step-by-step explanation:
If employees are picketing, it usually indicates that there is a labor dispute between the employees (often represented by a union) and the employer. In the context of the options provided, interest arbitration is the dispute resolution process the employer might be undertaking. Interest arbitration is used when the employer and the union cannot agree on the terms of a new contract and an independent arbitrator is appointed to listen to both sides and make a decision that is binding on both parties. This differs from rights arbitration, which deals with the interpretation or application of an existing contract, and policy grievance arbitration, which deals with disputes over the administration of a contract. Expedited arbitration is simply a faster version of the arbitration process.