Wal-Mart may face up to $2 billion in fines after a Minnesota state judge found a total of 2 million contractual violations by the retail giant.

The judge also ruled on Monday that Wal-Mart owed $6.5 million to 56,000 current and former employees because of contractual violations, including a failure to give workers promised rest breaks at least 1.5 million times. The judge also found that Wal-Mart managers in Minnesota had systematically broken the law by having employees take in-house training while off the clock.