The National Labor Relations Board instructed a federal judge to approve a settlement in a case pertaining to McDonald’s Corp. status as a joint employer, helping shield the company from liability from the employment practices of its hundreds of U.S. franchisees. The decision is a victory for the world’s largest fast-food chain as it faces calls to improve working conditions at its 14,000 domestic restaurants. If finalized, the determination would put more responsibility on franchisees for McDonald’s and other companies to address the concerns of their workers.