G.R. No. 149571 ; February 21, 2007
Government Service Insurance System, Petitioner, vs. Benjamin Nonoy O. Fontanares, Respondent.

FACTS

Benjamin Nonoy O. Fontanares, a government employee, filed a claim for compensation benefits with the Government Service Insurance System (GSIS) due to Rheumatic Heart Disease and Pulmonary Tuberculosis. He had worked as a Storekeeper I and Archivist I at the Records Management and Archives Office, where his duties involved processing and retrieving notarial documents. He later transferred to the Maritime Industry Authority as a Maritime Industry Development Specialist II, performing ship inspections. GSIS initially granted benefits for his temporary disability but denied the claim for Rheumatic Heart Disease, asserting it was not work-connected. The Employees’ Compensation Commission (ECC) affirmed GSIS’s denial, finding no substantial evidence that his working conditions increased the risk of contracting the disease.
Fontanares appealed to the Court of Appeals (CA). The CA reversed the ECC, declaring the illness compensable. It applied the presumption that an illness supervening during employment is work-related. The CA also noted that his workplaces exposed him to chemical hazards, dust, and biological agents, and that his maritime duties exposed him to toxic fumes. Furthermore, the CA held that the employer failed to controvert the claim within the prescribed period, constituting an admission of compensability.

ISSUE

Whether the respondent is entitled to compensation benefits for Rheumatic Heart Disease under Presidential Decree No. 626, as amended.

RULING

The Supreme Court granted the petition, reversing the CA and reinstating the ECC decision. The Court clarified that under the current employees’ compensation law (P.D. No. 626, as amended), the old system’s presumption of compensability—where an illness supervening during employment is presumed work-related—has been expressly discarded. The present system requires the claimant to prove, by substantial evidence, that the risk of contracting the disease was increased by the working conditions. The legal logic is that the law establishes a list of compensable occupational diseases and a separate set of criteria for illnesses not listed. For a non-listed disease like Rheumatic Heart Disease, the claimant must demonstrate a causal link between the illness and specific working conditions.
The Court found that Fontanares failed to meet this burden. While he submitted certifications indicating general exposure to hazards like dust and chemicals in the archives, he did not provide substantial evidence proving that these conditions actually increased the risk of developing Rheumatic Heart Disease. His theory of exposure to streptococci infection during ship inspections remained speculative and unsubstantiated by medical evidence. The Court emphasized that while P.D. No. 626 is social legislation, its liberal interpretation cannot override the specific requirement for proof of increased risk. Consequently, without the requisite causal proof, the claim was not compensable.