Perhaps because in other countries loosing the job does not happen from one day to another. In my country there is 2 months period for lay off. So the employer

Perhaps because in other countries loosing the job does not happen from one day to another. In my country there is 2 months period for lay off. So the employer still has to pay you a salary for 2 months. In case there is hope things can get back to normal in 2 months loosing the employee that you would need later makes no sense.