Stacy Keibler, J.K. Simmons and Kathy Najimy have signed up for guest spots on the sitcom \"Men at Work,\" which is being taped in Los Angeles, TBS said. Created by Breckin Meyer, the series stars Danny Masterson, Michael Cassidy, Adam Busch, James Lesure and Meredith Hagner. Production began on the show this week, the cable network said Thursday. \"\'Men at Work\' centers on four buddies who work together at a magazine,\" a synopsis said. \"Masterson plays the recently dumped Milo, whose friends are determined to help him get back in the dating game. Lesure is Gibbs, a photographer and successful ladies man. Cassidy plays Tyler, a features writer who brings a dose of style and sophistication to the group. And Busch is Neal, a somewhat nebbish reporter and the only one in the group with a steady girlfriend, [played by Hagner.] Together, the four friends help each other navigate the treacherous waters of work, friendship and women.\" It is to premiere May 24.