Can employer impose ban if employee resigns before...

We would like to inform you that this is related with the work contract type whether it is limited or unlimited. Therefore, resignation and termination are the worker’s rights.
If the work contract is limited and not finished, then the worker can resign, if the employer refuse then he shall complete the contract to avoid any absconding report against the worker and any ban. So he has to complete the contract to be able to change the employer to get NOC from the sponsor and cancel the visa.
If the work contract is unlimited then the worker can resign and comply with the notice period even if the company refused.
We advise you to review the previous answer.