Thankfully, my company had been "doing lean" for several years. All of our growth for the previous four years was accomplished with zero additional people. That meant there didn't need to be layoffs when sales were off 21% in 2008. Thankfully, people had made an investment in working ON the business, having opened and closed hundreds of A3s in the previous years. No layoffs and a small profit. LEAN saved our business! (no wonder people call me a lean zealot!!)
Lean is life insurance, and the improvements you can make today are the premiums. All we need to do is work to get every single stakeholder to spend 15-20 minutes per day working ON vs. IN the business. You'll be more than ready for a rainy day!