Jenna Fischer and husband Lee Kirk welcomed a baby boy on September 24th.

“Mom and baby are doing great,” a rep told PEOPLE.

The couple named the baby Weston Lee.

Fischer is best known for her role as Pam on the hit NBC television show, The Office, which is now in its eighth season. The 37-year-old actress revealed that she was expecting in May and writers incorporated the pregnancy into the show – Pam is pregnant with her Dunder Mifflin husband Jim (played by John Krasinski).

In July, she told Jay Leno that she was having a boy.

Fischer and Lee were engaged in 2009 and got married in a private ceremony in July 2010.