The Governing Law and Rules.   Entitlement to disability benefits by seamen on overseas work is a matter governed, not only by medical findings but, by law and by contract. The material statutory provisions are Articles 191 to 193 under Chapter VI (Disability Benefits) of the Labor Code, in relation with Rule X of the Rules and Regulations Implementing Book IV of the Labor Code. By contract, Department Order No. 4, series of 2000 of the Department of Labor and Employment (the POEA Standard Employment Contract) and the parties CBA bind the seaman and his employer to each other.   By way of background, the Department of Labor and Employment (DOLE), through the POEA, has simplified the determination of liability for work-related death, illness or injury in the case of Filipino seamen working