Jan. 12 (Bloomberg) -- Wal-Mart Stores Inc., the world's largest retailer, suffered defeats in two U.S. states that may increase pressure on the company to change its employment practices. The shares had their biggest decline in a month.

The Maryland legislature today voted to override a veto of the ``Wal-Mart bill'' requiring companies with more than 10,000 employees to pay some health-care benefits. A Pennsylvania judge last month granted class-action status to a lawsuit claiming Wal- Mart employees were pressured to work through breaks and after hours.

The latest actions add to legal and legislative setbacks for Bentonville, Arkansas-based Wal-Mart that may affect how much Wal- Mart provides in pay and benefits to its 1.3 million U.S. employees. The company is already appealing a California jury decision last month that awarded Wal-Mart workers $172.3 million in another off-the-clock case. The company also settled a similar case in Colorado for $50 million.

``They have very slim margins already and I find it hard to believe that they're not going to have to step up and do more in terms of health care and that's going to affect their margins, and therefore their earnings,'' said Patricia Edwards, who helps manage about $6.4 billion at Wentworth, Hauser & Violich in Seattle, including Wal-Mart shares.

Wal-Mart shares fell 83 cents to $45.74 as of 4:01 p.m. in New York Stock Exchange composite trading. They declined 11 percent last year.

Veto Override

The Maryland House of Delegates voted 88-52 late today to override Republican Governor Robert Ehrlich's May veto of a bill requiring companies with more than 10,000 employees in the state to devote at least 8 percent of their payroll to health-care benefits. The state Senate voted 30-17 earlier in the day.

The legislation, called the Fair Share Health Care Fund Act, will become the first U.S. state law of its kind. It was dubbed the ``Wall Mart bill'' because the retailer, which employs almost 17,000 people in Maryland, is the only company there known not to meet the legislation's requirements.

More than 30 other states, including Michigan and Wisconsin, are considering similar measures.

``This is a great moment for working families of Maryland and for businesses that do the right thing,'' said Vincent DeMarco, head of Maryland Citizens' Health Initiative, an advocacy group in Baltimore that supports the bill. ``This measure will sweep the country.''

The override could prompt Wal-Mart to rethink its plan of opening a distribution center in the state that would provide 800 jobs, company spokesman Nate Hurst said yesterday.

Jobs At Stake

``Maryland legislators shouldn't be putting these jobs at risk by making laws that attack Wal-Mart,'' he said.

House Majority Leader Kumar Barve said yesterday that the bill doesn't target Wal-Mart. ``It just happens that right now Wal-Mart is the only company of that size in the state,'' he said.

``Rather than spend all their money lobbying this, Wal-Mart ought to buy insurance for their employees,'' Kumar said. ``The package they offer now requires so much of a contribution that most of their employees can't afford it.''

More than 600,000 workers receive health care coverage from Wal-Mart, making it one of the largest insurers in the U.S., Wal- Mart spokesman Kevin Thornton said. It's also one of the few retailers to offer health insurance to part-time employees, he said.

Going To Trial

In state court in Philadelphia, Judge Mark Bernstein last month granted class-action status to a lawsuit against Wal-Mart that claims workers were pressured to work off the clock.

The lawsuit could include as many as 150,000 former or current employees in the state who have worked at a Wal-Mart store or the company's Sam's Club warehouse chain since March 1998, Michael Donovan, the lead plaintiff's lawyer, said in an interview today.

Wal-Mart has given ``every indication'' that it will go to trial rather than settle, said Donovan, who is a founding partner at Donovan Searles LLC in Philadelphia. He said he expected the trial to start in Philadelphia in early September.

Wal-Mart will discipline managers who allow off-the-clock work, Wal-Mart's Thornton.

``We strongly deny the allegations in this lawsuit,'' he said. ``Wal-Mart's policy is to pay associates for every minute they work. Certifying this as a class does not mean that the company has done anything wrong or improper. There has been no ruling on the merits of the plaintiffs' claims.''

To contact the reporters on this story: Kim Chipman in Washington at kchipman@bloomberg.net; Lauren Coleman-Lochner in New York at llochner@bloomberg.net.

Last Updated: January 12, 2006 19:18 EST