Labor law question in United arab emirates,, please help me?

I am a Filipino working here in UAE since May 26, 2008 (3 years), i will finish my contract this coming may 26, 2011 and i don't have plan to re-new my contract in my present employer. I would like to ask when is my LAST WORKING DATE? Is it according to the expiry date of my labor card (May 26, 2011) or expiry date of my residence visa (june 26, 2011) and what is the difference between these 2. Thank you so much... more power..