When Dwight goes through the box of complaints he made against Jim, he yells that four years of complaints went unheard. We may not know how long each one of them has been working there, but we do know that both Jim and Dwight have been working in the same office together since mid 2002.
A close look at Dwight's security badge shows that Jim managed to get the words "to the" in the position phrase, so it reads "Assistant to the Regional Manager."
In this episode we find out that Jim complained about Pam's wedding planning, and withdrew it. Then due to the problems caused by it, he applied for the job in Stamford.
Michael: That's a nice tie.
Ryan: Thank you.
Michael: That is... who makes that?
Ryan: Um... I don't-
Michael: Do you mind if I wear that for the photo?
Ryan: Um... let's um, let's keep our own clothes.
Jim: What does Roy think about everything?
Pam: I don't know. I try not to bother him about this kind of stuff.
Jim: You mean, like, your thoughts and feelings?
Dwight: ID badges are long overdue. Security in this office park is a joke. Last year, I came to work with my spud gun in a duffel bag. I sat at my desk all day with a rifle that shoots potatoes at sixty pounds per square inch. Can you imagine if I was deranged?
Michael: This is from Kevin. He says Stanley uses his Miracle Whip without asking. Meredith complains that everyone talks too loud in the morning and the lights are too bright. Creed, Creed is sick of looking at the redhead all day and wants a seat facing the receptionist.
Angela makes a copy of a paper with the lid up. She should know better, considering she works in an office that sells paper.
In the last shot we see Toby putting away the box of complaints into a stack of boxes. But instead of on top, he sticks it in the middle. It is unknown how the box on top is being held up.