Visas can be revoked by immigration officials, including work visas upon termination from a job. If someone loses their job on a work visa, there's an UNOFFICIAL 180-day grace period to find another job in their specific field. That said, "Unofficial" entails that it could be revoked anytime after their termination," and thus be deported. <a href=""http://www.usilaw.com/Knowledge-Center/2016/November/Do-H-1-Visa-Holders-Get-Deported-If-They-Get-Fir.aspx#:~:text=The%20USCIS%20cannot%20feasibly%20track",in%20the%20agency's%20best%20interest.&amp;text=You%20can%20also%20be%20penalized,"country%20without%20a%20valid%20visa"">http://www.usilaw.com/Knowledge-Center/2016/November/Do-H-1-Visa-Holders-Get-Deported-If-They-Get-Fir.aspx#:~:text=The%20USCIS%20cannot%20feasibly%20track",in%20the%20agency's%20best%20interest.&amp;text=You%20can%20also%20be%20penalized,country%20without%20a%20valid%20visa</a>.