I honestly hope you never work in HR because your sort of attitude is genuinely disastrous to this industry. Acting like treating your employees with respect is a 'risk' is terrible.
Also, if I were laid off, why would I want to continue working for them for two more weeks? I don’t care about the company’s success at that point. I’m already getting two months severance; it’s much better to focus entirely on finding a job as quickly as possible. Half a month’s paycheck is not worth the emotional pain of seeing your non-laid-off colleagues continue to live their normal life, but act all awkward around you.
In fact, I’ll go ahead and say: I think your attitude that requests laid-off employees to keep working is disastrous. Nothing about making them come to work is respectful or beneficial to them.