[robocat]

There's a lot of people on HN that are not from the USA: at-will doesn't exist in many other wealthy countries.

E.g. I'm from New Zealand, and at-will contracts are not legal for employees. A company can use contracts (employing a contractor) but contracts are effectively restricted to professional specialists. A company can use temping agencies but the agency takes a big commission on top of wages. A company that has to sack someone can often get hit with financial penalties through the employee rights protection laws.