Your alternative hypothesis is interesting. I am not sure offhand how it would go. On one hand, as an H1B employee, it is not that hard for you to switch jobs a

Your alternative hypothesis is interesting. I am not sure offhand how it would go. On one hand, as an H1B employee, it is not that hard for you to switch jobs and find a person to transfer your visa. Tiny companies might have an issue but then again, tiny companies don't pay that well (assumption.). After time goes by though, switching jobs can be harmful especially if you are being sponsored by the company for a green card. This is because your green card application process can slow down as you switch jobs (some things will have to be redone.) On the other hand, there is another factor in place: The wait times for green cards are reaching insane levels (25 + years). In such a climate, maybe the person might just decide to switch jobs more often.