inhuman and unbearable treatment

what constitute Inhuman and unbearable treatment accorded the employee by the employer or his representative?

please share sample case

you need to expound further on your terms when you said " in human and unbearable treatment".it would be to vague and general.

ARTICLE 285. Termination by employee. -
(a) An employee may terminate without just cause the employee-employer relationship by serving a written notice on the employer at least one (1) month in advance. The employer upon whom no such notice was served may hold the employee liable for damages.
(b) An employee may put an end to the relationship without serving any notice on the employer for any of the following just causes:
1. Serious insult by the employer or his representative on the honor and person of the employee; chanroblespublishingcompany
2. Inhuman and unbearable treatment accorded the employee by the employer or his representative;
3. Commission of a crime or offense by the employer or his representative against the person of the employee or any of the immediate members of his family; and
4. Other causes analogous to any of the foregoing.

how would you say if it is inhuman or unbearable treatment atty? who should determine this inhuman and unbearable?