I would like to apply work permit in cambodia is it possible?

Rady, you need it. You are suggested to get the work permit through the embassy in your country. The follwing documents will be needed:
1. A completed application form;
2. Copy of the bio data page of a valid passport;
3. Copy of employment approval document issued by the Macao authorities (i.e. the application of "Authorization to Stay for Non-resident Workers" which has been verified by the Macao Immigration Department).
4. Two recent 1.5-inch, full-face, no-hat, white-background, coloured or black-and-white photos of the applicant.

Note: Item 3 should be obtained through your employer.