Rosemarie DeWitt joins 'Company Men'

Chris Cooper also in talks to join John Wells' drama film

Rosemarie DeWitt is slated to be one of "The Company Men," John Wells' downsizing drama that Chris Cooper also is in negotiations to join.

The actress, who broke through with her performance in last year's "Rachel Getting Married," will appear with the Oscar-winning Cooper opposite Ben Affleck, Tommy Lee Jones and Kevin Costner in the pic written and being directed by Wells.

The script revolves around a year in the life of three men trying to survive a round of corporate downsizing.

DeWitt will play Affleck's wife. Cooper is a white-collar worker losing his job.

Claire Rudnick Polstein and Paula Weinstein are producing the indie drama, which is due to begin shooting this month in Boston.

DeWitt, repped by Gersh and Wishlab, is one of the stars of Showtime's "United States of Tara" and also did a stint on "Mad Men."

The Paradigm-repped Cooper has "New York, I Love You" coming out in September.