Вот что пишут скажем на форумах адвокатских по этой теме
http://www.murthy.com/news/UDisster.html
Employer's obligation to notify INS of termination :
The law states that an H1B employer should notify the INS “immediately” of “any material changes in the terms and conditions of employment“ regarding an H1B employee. Termination is considered such a change. The H1B employer should send a letter to the same INS Service Center that approved the H1B petition, notifying that Service Center of the termination of H1B employment.
Obligation to provide reasonable costs of return transportation :
When an H1B worker is laid off before the end of the authorized period of stay, the H1B employer must provide reasonable costs of return transportation for the employee to his or her last country of residence. The law does not appear to require the H1B employer to pay the reasonable cost of the airline ticket for returning the family members or for transfer of the H1B employee's property to the home country.
Employers should keep in mind also that there is no obligation for an employer to provide the employee return transportation costs if the H1B employee chooses to remain in the U.S.
The U.S. Department of Labor (DOL) has published regulations preventing the “benching” of H1B employees without full pay. The DOL requirement states that an employee who is temporarily non-productive due to the employer's request or lack of work, must continue to pay its H1B employee/s regular wages. The requirement ceases with a ‘bona fide’ termination
Contrary to popular belief, rumor, and other confusion from various sources, there is no in-status “grace period” for terminated H1B employees. Therefore, the status ends on the final date of employment. A 60-day grace period was proposed by the INS in its June 19, 2001 Memo on the American Competitiveness in the Twenty First Century Act (AC21), as discussed below. This is still only a proposal, not the law.
A general rule is that, typically, an H1B employee who is out of status for a period of 30 days or less would have a reasonable likelihood of having the out-of-status period disregarded by the INS. However, we cannot guarantee that this unofficial policy will always be honored.
Я не сильно искал, но по крайней мере на глаза не попалось никаких доков где бы указывалась что in case of fired, работодатель освобождается от обязанности платить reasonable transportation costs..
