In some situations, people can actually earn more from unemployment benefits by being laid off due to some hasty oversights in the aid package (Reference: https://www.cnbc.com/2020/03/27/how-unemployed-workers-could... ). This doesn't account for lost benefits or the risk involved in losing a job, but it could disincentivize people returning to work if it means their income will go down.
Of the many people I know who have been “laid off”, all of them have been told they’ll be first in line to be re-hired the moment quarantine ends.
If a business can’t make money, it makes more sense for them to let employees collect unemployment during the downtime than to overextend the business’s balance sheet. During normal times, this is a common tactic for seasonal businesses. I have friends in seasonal tourism industries who received training on applying for unemployment benefits during their annual off-season layoffs each year. They even have an explicit system for tracking seniority in the re-hires.
Of course, the longer this quarantine lasts, the more likely their businesses are to disappear before they can re-open. Unfortunately we won’t know this number for many months. For now, the initial unemployment claims number can't discriminate between jobs that have been temporarily paused and jobs that have been eliminated.