[pascalxus]

Working at a company like that you really have to come to terms with the fact that any second you're working there, could be your last. Act accordingly.

I take that to mean, that one definately should not be working evenings and weekends. Why do all that, for a company that's not going to value your work and look for wrongful ways to terminate you. If anything it means, you should work much fewer hours.

[type-r]

If we elide "like that" from your first sentence I agree. I promote people always assume that firing could happen anytime. Taking this approach makes you less susceptible to agree to unreasonable requests.