Just got laid off, what should I do first? (update)

They called a meeting on Monday and 15 of us were let go. I had been there 15 years. There are 15 people counting on me, so I am trying to be careful. I have a few weeks of savings and a rent payment due. Which steps were urgent?

Ask for your final pay, unused leave and any documents in writing before you leave, if you still can.