It's a Living S6, E4

This series featured a group of waitresses (and a pianist, Sonny) who work at a fancy restaurant at the top of a skyscraper.

Cast:Gail Edwards , Barrie Youngfellow , Paul Kreppel , Marian Mercer , Crystal Bernard , Richard Stahl , Sheryl Lee Ralph , Ann Jillian , Louise Lasser , Earl Boen , Susan Sullivan , Wendy Schaal , Bert Remsen , Richard Kline , Robyn Peterson , Tom La Grua , Phil Morris , Paul Willson