Weber, 53, has been cast as a business advocate brought in by a major investor (Mary McCormack) to save Kaan & Associates, following management consultant Marty Kaan's (Don Cheadle) exile, reported Entertainment Weekly.
Upcoming episodes will explore the fallout from Marty being betrayed by his confidant Jeannie van der Hooven (Kristen Bell) in last season's finale.
Weber is a television veteran, perhaps best known for playing womanising pilot Brian Hackett in the long-running NBC sitcom 'Wings'.
He also portrayed a conniving network executive in Aaron Sorkin's short-lived 'Studio 60 on the Sunset Strip', and more recently has appeared in 'Party Down', 'How To Get Away With Murder' and 'NCIS: New Orleans'.