Wal-Mart will start hiring for the stores in Texas, Oklahoma, Florida and California, and will encourage previous employees and those that transferred to other stores to apply, company spokesman Lorenzo Lopez said on Wednesday. Wal-Mart announced the store closures in April to fix plumbing and other repairs. The move impacted some 2,200 workers and the United Food and Commercial Workers International Union (UFCW), which backs campaigns pushing the retailer to improve pay and benefits for store employees, filed a complaint to the NLRB that is still pending.