Most advertisements for maternity leave contracts state a proposed date for the end of the contract but add the proviso 'or the post-holder's return if earlier'. There seems to be some funny law that says that a woman can return to work on the very last day of school before the summer holidays, and is then entitled to the six-week holiday at full pay, while the person who has covered their class on a temporary contract for several terms is entitled to no holiday pay at all. So, my question is, can you leave a maternity leave contract before the 'end date' if the 'end date' stipulated on the contract is open to change at any time, depending on the 'post-holder's' whim or circumstance? I mean, if you're in a temp contract, which may end in e.g. April 2010, but you want a perm contract, can you legitmately search for a job which begins before your 'end date' with the possibility of havign to leave before the post-holder's return? What rights do you have in such circumstances? The perm post-holder has lots of rights, duly protected by law, but don't temporary employees have the right to tender themselves for permanent work?