He has the right to refuse.I should of said something when i gave him the raise but i did not.remember here in the dr. 10,000 pesos is a good salary.i does not amount to much in us dollors but here in the dr. that's a good salary. all i am asking for is a 47hr. work week if 44 is the law then how much do need to pay him extra for overtime and does he have the right to refuse.
Furthermore, when you gave him the raise, his benefits automatically went up proportionately.
That is to say, that if you fired him now, his "liquidacion" would be based on his present salary, not what he earned before.
More importantly.
Here are 2 possible solutions.
One is that you speak with him and get him to agree with the extra hours, explaining to him that you need him to do so, for whatever justification you have, and that you do understand that he doesn't have to.
If he accepts, good for you.
The other solution is to fire him with the understanding that you would rehire him at a different rate, should he decide to accept.
If he does accept, you would have to pay him all his benefits, liquidacion, regalia pascuale, vacation pay and 2 week notice.