In The Office episode ‘Sexual Harassment,’ Pam’s mom was played by Shannon Cochran.
In The Office episode ‘Niagara,’ Pam’s mom was played by Linda Purl.
Helene Beesly, Pam’s mom
Helene was played by Shannon Cochran in her one appearance in Season 2, and by Linda Purl in subsequent seasons.
In her first appearance on the show, Pam’s mom (played by Shannon Cochran) visits her at work during Sexual Harassment.
She would not appear again until the Season 6 episode Niagara, where she would be played by Linda Purl. At this point, Helene is estranged from her husband and meets Michael Scott during the wedding. Michael is seen entering Helene’s hotel room in the final scene of the episode. Helene and Michael date until he breaks up with her in the episode Double Date. Helene is at the hospital for the birth of Pam’s daughter Cecelia in The Delivery.
In Season 7, Michael thinks he has herpes and visits Helene to notify her in the episode Sex Ed. Helene attends baby Cece’s christening in the episode Christening.