Once in a while? Sure.

“We have an emergency, the service is screwed, we really need it not to be”

“We have to deliver by the end of the week but we haven’t finished testing everything, we need some extra effort for the next couple of days to fix and validate as things come up”

These can work, in my experience, but it can’t become routine and you have to be prepared for a higher than average error rate from your people.