Season four marked the departure of Karen Filippelli as a regular character, although she appeared for a few seconds in the first episode, "Fun Run" and in the sixth episode, "Branch Wars", as the regional manager of the Utica branch. Relationships again emerged as the main theme of the season, with Jim Halpert and Pam Beesley's rising, and Michael Scott and Jan Levinson's, as well as Dwight Schrute and Angela Martin's declining. Technology was another prevalent theme as the office staff struggled with initiatives introduced by Ryan Howard to modernize the company.
A freak car accident sends Michael reeling as his reputation hits a new low; Kevin’s suspicion is proven true.
Michael holds a 5K charity run to try to lift the branch’s curse; Pam and Jim admit that they’re dating.
Ryan brings the company into the digital age; Dwight offers Angela a scraggly cat and she gives him a reality check.
Michael sets out to prove he can win back clients with gift baskets; Angela and Oscar fear they’re going to get fired.
A newly single Dwight fights with online sales; Angela preps for the website launch party; Michael asks Pam for advice.
Michael finds he’s not on corporate’s VIP list; Angela organizes Michael’s party; Toby takes online driving school.
Michael moonlights as a telemarketer; Jim and Pam book a stay at Dwight’s farm; Jan arrives with curtain samples.
Dwight cringes as Andy wears Angela down; the office discusses Michael’s money issues; Michael enlists Oscar’s help.
Michael leads the creation of a company commercial; Dwight gets lost in an online world; Andy needs advice about Angela.
Michael ropes Jim into a scheme against Karen; Michael announces Stanley is leaving; Andy eyes the Finer Things Club.
Michael embarks on a journey of survival; Jim is left in charge, grappling with the idea that he’s becoming Michael.
Michael testifies as a witness in Jan’s lawsuit; Pam pressures Jim into sharpening his ping-pong skills for a rematch.
Michael and Jan host a dysfunctional dinner with both reluctant invited guests and eager uninvited ones.
Michael, on the rebound, asks his employees to set him up on a date; Kevin and Andy collaborate to solve a problem.
Michael and Dwight find out what it means to party with Ryan; Jim’s plan to not work Saturday leaves the team trapped.
Michael confronts Stanley after he snaps in a meeting; the office reacts to Pam wearing glasses for the first time.
Michael tries to hire young recruits at a job fair; Jim golfs to save his job; Dwight takes charge of an empty office.
Michael wants to celebrate Toby’s last day; Toby introduces the office to Holly; Jim and Pam think about their future.
The office celebrates Toby’s farewell with an extravagant party; Jim’s proposal to Pam gets interrupted by Andy.