Overstay for family visa

Hi,

I have resigned from my company and expected to leave end of the month. But my son's visa expires 1 week before the date of our exit from Oman. How much fine they will charge if he stays 1 week period?

Visa Overstay Waiver For Immigrants To get the waiver for exceeding visa, the remote national must show that their US resident or changeless occupant mate or guardians will endure 'outrageous hardship' if the outside national isn't permitted to come back to the US.

Thank you for the reply. But I think your answer is related to US visa. But my concern is about Oman visa.