WASHINGTON (AP) — Federal officials have filed a formal complaint charging that Wal-Mart violated the rights of protesting and striking workers last year.

The National Labor Relations Board says Wal-Mart illegally fired, disciplined or threatened more than 60 employees in 14 states for participating in legally protected activities to complain about wages and working conditions.

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The labor board’s general counsel first laid out the charges last November, but held off on filing a complaint while trying to work out a settlement with Wal-Mart. The company has insisted its actions were legal and justified.

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The complaint will go before an administrative law judge. If Wal-Mart is found liable, it could be required to award workers back pay, reinstatement and reverse any disciplinary action.

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