emergency tax without dole finding out

Hello, well I got a part time, extremely part time job, i.e, I'm lucky if I get to work one day every three weeks but even though I only work one day I still get emergency tax, Now is it true that when you request your emer tax back that's how the dole find out, I cant tell them because I would have to get my boss to fill in a slip every week, Now I cant even get hold of him, his phone is never on and there's no way in hell I could find him to get those slips stamped, so if anyone has any advice on how to get around this **** It would be much appreciated, I just don''t know what to do, and before anyone starts chatting crap, I've been looking for full time work constantly, every day to no avail, so if anyone can help that'd be brilliant, cheers