Give a stream of consciousness and then the final answer. The series -- presented as if it were a real documentary -- depicts the everyday lives of office employees in the Scranton, Pennsylvania, branch of the fictional Dunder Mifflin Paper Company. In the episode, Robert California (James Spader) brings his wife (Maura Tierney) into the office for a job, and tells Andy Bernard (Ed Helms) behind her back not to give her one. Meanwhile, Dwight Schrute (Rainn Wilson) opens a gym in the building and tries to get Darryl Philbin (Craig Robinson) to join it.

Based on this passage, who plays robert california's wife on the office?
To answer this question, we should know that: In the episode, Robert California (James Spader) brings his wife (Maura Tierney) into the office for a job, and tells Andy Bernard (Ed Helms) behind her back not to give her one.
So, the final answer is Maura Tierney.