O1-B out of status

[faris.khader]

Hello

One of my friends who holds an O1-B visa is into a consulting work here in USA, and has been sick for the past few weeks. Is there a threat of he being out of status when he is going through a treatment? He is insured under his wife's H1B work. Any expert opinion is great. The treatment is expected to continue for a couple of months

Thanks