[hash872]

They're not tied to a particular employer, this is a myth that will seemingly never die. H1-Bs are transferrable between employers. I know multiple people in both my professional & personal life who have done so easily

https://immigrationhelpla.com/h1b-visa-transfer/

[persolb]

Having H1-B visa employees introduce overhead. Not all companies are willing to do it. We’ve recently decided to stop H1-Bs for anyone that isn’t a senior hire.