[thiagocmoraes]

There's always risk of having your visa denied when changing jobs and plenty of situations where you get in a really bad place with something out of your control.

I know plenty of people that stick to a sub-optimal job out of fear of being stuck out of the US.

Changing jobs is very stressful on an H1B visa.

[claudeganon]

In addition to almost every employer making illegal demands of H1-B holders when they quit or are terminated (such as asking them to pay legal fees the holders are not supposed to be responsible for). I’ve had friends dealing with this multiple times.

Sure, you can get a lawyer to write a demand letter why you’re hoping to not get deported before you find another job. And of course risk a reference from that job or worse. But the whole system is designed to create indentured servitude to corporations for foreign workers. Just put everyone who graduates with an advanced degree on a greencard and call it good already.