Ron Livingston has joined the cast of HBO's Boardwalk Empire.

The actor joins the fourth season of the show as a series regular.

He will play a character named Roy Phillips, a wealthy businessman who will also be a love interest to Gillian Darmody (Gretchen Mol), Deadline reports.

Production on Boardwalk Empire's fourth season is currently underway. It is scheduled to air on HBO later this year.

Livingston is best known for his roles in Office Space, Sex and the City, Band of Brothers and Game Change.