Do you continue to pay sales reps on maintenance accounts

Do you continue to pay sales reps on maintenance accounts a commission. To me it would make the rep keep the account happier......if so how much would you pay a rep to make sure the account is happy each month?
Links to this that might be good to look at

http://www.propowerwash.com/board/upload/showthread.php?t=18366

http://www.propowerwash.com/board/upload/showthread.php?t=18367

Yes unless they take a one time draw