Electricpig has done some digging around and unearthed the story of Espinosa, who was 14 when he joined the company in 1976 and has worked for the company consecutively since then.
He was employee number eight -- Wozniak was number one, somewhat contentiously, as Jobs preferred to be known as number zero rather than number two -- and one of Espinosa' first notable tasks at the company was to compile a manual for the Apple II.
For the full story of Chris Espinosa, the 14-year-old who joined Apple in 1976 and is still there, go to Electricpig.
(From our colleagues at MacWorld UK, another IDG publication and sibling of PC World and Macworld.)
This story, "Who is the Longest-Serving Apple Employee?" was originally published by Macworld U.K..