companies do not give guarantee that employee will repay the loan :o) all that they're required to do is to provide a letter stating that "they will notify the bank in case employee is terminated". Clever companies include disclaimer that "they do not take any responsibility for employee's debt"... stupid companies do not include it and then panic that they may be liable to re-pay the loan and do stupid things.
Most of bank loans have insurance on them in case employee is repatriated / cannot repay. This is why I said speak to the bank :o) remember that the bank wants to close this off just as much as you do - they'll try to help you find the way to repay. don't listen to people who don't know, just speak to the bank