I agree with debbie, and I wish more churches would remove people who hadn't been there in years, don't know about our new church how many there are on he roll who do not attend, but our old one had more then 100.
Our church has such a rigorous membership process that we don't really have that problem, because in order to become a member, you have to be pretty committed just to get through the process. That weeds out the pew sitters and disappearing acts.
But we do have a process that removes people from the rolls after six months unexplained absence (after offering them counselling, of course). After that, they're free to reapply for membership, although I can't imagine why they'd want to, if they were so indifferent that they didn't even show up for six months.
In our church you first must be a baptized believer, or have become a believer and are seeking baptism, or you must join by testimony, or letter, they also require a new members class, but I am not clear if you are refused membership if you do not attend the class, I do know the by laws say you are.
In our church, you must submit your testimony, be baptised or be a candidate for baptism, and be mentored by one of our elders. If you're a recent convert, then you must also take a new believers' class. If you're a long time Christian, but are a prospective new member, then we strongly encourage you to take a new members class, but it isn't required.