公司突然要求推迟入职，要是没有给出合理理由和确定时间，看来像是 red flag
你要有paycheck能cover，如果你有超过60天没有paycheck，就out of status
When does the obligation to pay for nonproductive time start?
Nonproductive pay requirements begin with the earliest of the applicable following events:
The H-1B worker “enters into employment” with the sponsoring employer, which occurs when the worker first makes him/herself available for work or otherwise comes under the control of the employer, such as reporting for orientation or studying for a licensing exam;
No later than thirty (30) days after the H-1B worker is first admitted into the U.S. pursuant to the H-1B petition, whether or not the H-1B worker has “entered into employment”;
For a worker already in the United States, generally no later than sixty (60) days after the date the H-1B worker becomes eligible to work for the employer (the approval date found on the U.S. Citizenship and Immigration Services (USCIS) (formerly the Immigration and Naturalization Service) Notice of Action, Form I-797), whether or not the H-1B worker has “entered into employment”