A California woman has sued United Parcel Service Inc., claiming the Atlanta-based shipping giant has withheld some $100 million in overtime wages from account managers it employs across the country.

The suit, filed in federal court in San Diego by Sanford Wittels & Heisler LLP on behalf of UPS account manager Laura Meza, seeks class action.

The law firm said UPS account managers go door-to-door to businesses throughout the country to promote UPS' portfolio of delivery services. UPS requires these employees to work up to 60 hours a week but claims that these workers do not deserve to get overtime pay.

The suit alleges UPS (NYSE: UPS) does not pay its account managers overtime wages for work in excess of 40 hours a week and eight hours a day; fails to provide these workers with mandatory meal periods and rest breaks; and fails to keep accurate records of the hours these employees work.

"My day starts at 6 a.m., when I have to go to the office to get my daily manifest lists and respond to calls and e-mails from customers and supervisors,” Meza said in a news release. “From 8:30 a.m. to 4:30 p.m., I'm out in the field pitching UPS products to customers. When I finally come home, I have to keep responding to work e-mails. And even on weekends, vacations and sick days, I'm routinely expected to do paperwork, calls and e-mails for work. That's the grinding routine that UPS requires of all of us account managers."

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