Hello Kabayan.
These are the List of Diseases that won't allow a person to work abroad:
Infectious category:
HIV/AIDS reactive
Hepatitis B surface antifgen, HCV reactive
Microfilaria positive and malaria blood film positive, known leprosy patients
Tuberculosis – any type, X-ray showing active PTB, past evidence of PTB or healed • Pulmonary scar, including minimum fibrosis, calcification (granuloma) pleural thickening, pleural effusion, tuberculosis lymphadenitis
VDRL/TPHA reactive

Non-infectious category:
Chronic renal failure
Chronic hepatitis failure
Congestive heart failure
Hypertension
Diabetes mellitus
Known case of cancer
Psychiatric disease and neurological disorders
Physical disabilities, i.e. color blindness, deafness

As of what I have known. Hepatitis B is not a CONTAGIOUS disease rather is COMMUNICABLE. There are differences between between the 2 terms. Hepatitis B is therefore, ONE of the diseases that would not allow a person to work abroad.

Hepatitis B doesn't have a cure. It can be transmitted thru Sexual Contact, Needle Pricks, Blood Transfusion, and baby inside the womb of Hepatitis Reactive Mother. It is very harmful like HIV-AIDS, and again there is no cure for that.

Even though the agency or the clinic there in the Phil. would allow him with the said permit, siya rin mahihirapan dito when he gets here kasi there is another Medical exam again, gastos lang..when found out na Reactive sya then papauwin din sya (gastos pa). For another option naman po, he can go to trusted Clinic/ Laboratory para nga malaman if he is really reactive with Hepa kasi ung ibang agencies dun alam nyo na po pinagkakakitaan ang mga kababaya natin.

I hope this will help po..Godbless.