one of my friend's company sponsored an employee on H1B .the petition approved almost 2 months ago,now the financial situation of employers company is not so good right now and he thinks that he needs at least 2 months to start a payroll for this new employee, but prospective employee is telling him that this is the law that he should start receiving payroll within 2 months of approved petition ,otherwise uscis will cancel that petition.......please help its urgent