From the article: "He would serve as inspiration for Lawrence, the construction-worker neighbor in “Office Space”"
That's what I get for reading the comments before the article. Lawrence was a great character, and his reaction to the hypothetical about being asked about "having the case of the Mondays"[0] is classic.
That would make sense. Lawrence was a construction worker. Peter was shown at the end of the film blissfully working in his hard hat alongside Lawrence, "This ain't so bad huh? Makin' bucks. Gettin' exercise. Workin outside..."