Hello Chlorinated,
I am not aware of any law on this matter, but in practice I have found that if you get your paper work submitted on time, but there is a delay due to them, they will extend it so that you do not have a period without money. Sometimes people have to ask for this extension and sometimes it happens automatically, but I have never known it be refused.
Catherine
Nothing on this board constitutes legal advice - always consult a professional about specific problems