I am in a simialr situation right now. You will have to contact your G.P or visit them and keep requesting sick notes (unless you visit which might help extend the notes longer).. They will send you reminders for the sick notes when they need to be resent. I am having to do this every two weeks - which is a pain seeing as I can't actually get to the G.P, I am having to rely on friends/partner to pick up said notes for me =(. Hope he feels better soon, painful stuff. Also its probably best keeping in touch with his work also, explaining the situation and what there policy for it all is - it can be a minefield, mine has been going on for over a year also.