WASHINGTON (AP) — The Labor Department says clothing maker Levi Strauss & Co. will pay about $1 million in back wages to 596 employees after the government found overtime and record keeping violations.

A government investigation found that the company misclassified several groups of workers as exempt from overtime, including assistant store managers at some newly acquired stores.

Government officials say the assistant managers were required to work off the clock during late-night closings, early-morning openings and staffing shortages.

San Francisco-based Levi Strauss has agreed to upgrade its time and attendance system and comply with wage laws. The investigation is part of a broader Labor Department crackdown on companies that misclassify workers to avoid paying overtime wages.