SACRAMENTO, Calif. (AP) — State regulators have ordered a Southern California warehouse operator who handles merchandise for big-box stores like Walmart to pay employees more than $1 million in unpaid overtime.

State Labor Commissioner Julie Su says two facilities operated by Chino-based Quetico LLC shorted wages for 865 workers.

Investigators say employees were also denied legally required lunch and rest breaks.

Besides back wages, the Los Angeles Times says Quetico has been fined more than $200,000.

In a statement early Tuesday, Quetico officials say they strongly disagree with the labor commission conclusions and they will vigorously appeal to protect the firm’s reputation.