Laid off this week, where do I start? after 13 years as a warehouse supervisor

They called a meeting on Monday and 13 of us were let go. I had been there 13 years. I have a few weeks of savings and a rent payment due. Which steps were urgent?

Thanks for writing this out. I went through something close to it 3 months ago, and it settled down once I kept a simple log of every call and form.