Blondie said - If they counting you as an active jw, someone in the congregation is turning in time slips for you and the secretary is sending the info to headquarters. But I have never seen that done and could get the BOE into trouble.
In my case, the Secretary continued reporting time on my card for almost six months after I faded. I couldn't figure out why I was still being assigned talks/householder duty. I was told he got chewed out by the CO.