James Spader is joining NBC’s “The Office” as a series regular next season. He will continue to play salesman Robert California, having guest-starred on the show this season in this capacity, as the producers sought their Steve Carell replacement.

 In the Thursday comedy series, California was hired over the summer as the office’s new manager, but gets himself promoted within hours of arrival to company CEO.

 (Kathy Bates, who had played Jo Bennett, the CEO of the office’s parent company over two seasons in a recurring role, left to star in NBC’s drama series “Harry’s Law.”)

“The Office’s” eighth season debut is set for Thursday, Sept. 22.

Here’s a clip from Spader’s first appearance on “The Office”: