The Ex (2006)

Credit-grabbing, back-stabbing, wife-nabbing. Just another day at the office.

When his lawyer wife, Sofia, becomes pregnant, chronic underachiever Tom Reilly must take a job at his father-in-law's advertising firm. Tom has to adjust to the demands of a very high-powered job, and he finds himself in an increasingly hostile office rivalry with Chip, Sofia's paraplegic former lover.