H1B workers typically work for contracting companies, so that when the work is up (or if they lost their job) they can go to a new company and continue their gr

H1B workers typically work for contracting companies, so that when the work is up (or if they lost their job) they can go to a new company and continue their green card application. The way the government attaches the process to a job really discourages H1B workers from working for US companies as full time employees.