Wal-Mart Stores, facing a raft of state bills that would require it to increase spending on employee health insurance, plans to ease several longstanding - and heavily criticized - restrictions on who is eligible for benefits, the company said yesterday. The new eligibility rules are intended to increase the number of employees who can participate in the insurance plan, but it is unclear how significant the impact will be because Wal-Mart gave little detailed information about its plans.[snip] Even with the expanded plan, Wal-Mart's workers, whose average pay is less than $20,000 a year, will still pay monthly premiums and...