Reba McEntire will guest star in an episode of Working Class, a CMT sitcom starring Melissa Peterman. McEntire and Peterman previously worked together on Reba, a series that ran from 2001 to 2007 on the WB and CW networks. In Working Class, CMT's first sitcom, Peterman stars as a single mom who tries to give her kids a better life by moving them to an upscale suburb. The series also stars TV veteran Ed Asner and Broadway actor Steve Kazee. McEntire was serving as guest DJ on CMT Radio Live when she announced plans to appear in an episode of Working Class to be taped in December. The series premieres Jan. 28, but an air date for McEntire's episode has not been scheduled.