GSIS vs. Vicencio

A sickness not listed as an occupational disease may still be compensable under P.D. No. 626 if the claimant adduces substantial evidence that the risk of contracting the illness was increased or aggravated by the employee's working conditions; where the Death Certificate indicates a listed disease, the liberal spirit of social legislation warrants resolving doubts in favor of compensability.

Judge Honorato S. Vicencio served in government for a total of 37 years, beginning as a Legal Researcher at the Development Bank of the Philippines in 1964, rising to Senior Bank Attorney until his retirement in 1985, then re-entering service as Assistant Fiscal for the City of Manila in 1987, and serving as Metropolitan Trial Court Judge from 1992 and later as Regional Trial Court Judge of Branch 17, Manila from 1999 until his death in 2001. His widow, respondent Marian T. Vicencio, sought death benefits under Presidential Decree No. 626, as amended, the Employees' Compensation law, which defines compensable sickness as any illness listed as occupational by the Commission or any illness caused by employment subject to proof that the risk of contracting it was increased by working conditions. The Government Service Insurance System (GSIS), as the agency charged with implementing P.D. No. 626, denied the claim on the ground that the illness was not an occupational disease.

Judge Honorato S. Vicencio entered government service in 1964 as a Legal Researcher of the Development Bank of the Philippines (DBP). After passing the bar examinations in 1966, he became an Assistant Attorney and rose through the ranks until promoted to Senior Bank Attorney, a position he held until his retirement from DBP in 1985. He re-entered government service in 1987 as Assistant Fiscal for the City of Manila, was appointed Judge of Branch 27, Metropolitan Trial Court of Manila in 1992, and was later appointed Regional Trial Court Judge of Branch 17, Manila in 1999, serving in that capacity until his death in 2001.

On November 30, 2000, Judge Vicencio suffered loss of consciousness due to pericardial effusion and was admitted at the Makati Medical Center, where he was diagnosed with Adenocarcinoma of the Left Lung with Metastases to Pedicardium. He underwent intravenous chemotherapy and remained confined from November 30, 2000 to May 7, 2001. On May 31, 2001, Judge Vicencio died. His Death Certificate stated the immediate cause of death as Cardiopulmonary Arrest, with the antecedent cause as T/C Fatal Arrythmia; no underlying cause of death was indicated. He was survived by his wife, respondent Marian T. Vicencio, and daughter, Mary Joy Celine Vicencio.

Respondent Mrs. Vicencio applied for death benefits with petitioner GSIS, but the application was denied by the GSIS Employees Compensation Department Manager on the ground that the illness which caused Judge Vicencio's death was not considered an occupational disease and there was no showing that his work as RTC Judge had increased his risk of contracting the ailment. Her motion for reconsideration was likewise denied. She then appealed to the ECC, which dismissed the appeal. She elevated the matter to the Court of Appeals via a Rule 43 petition, which reversed the ECC and ordered GSIS to grant the claim. GSIS's motion for reconsideration was denied, prompting the present petition before the Supreme Court.

• Underlying Cause of Death: Petitioner GSIS argued that based on the medical records, Judge Vicencio's underlying cause of death was Adenocarcinoma of the Lungs with Metastases, and that the cause stated in the Death Certificate — Cardiopulmonary Arrest T/C Fatal Arrythmia — was a mere complication of his lung cancer. The attending physician left the portion on the Death Certificate for the underlying cause blank, failing to indicate Adenocarcinoma of the Lungs with Metastases.
• Non-Occupational Disease: Petitioner GSIS contended that Adenocarcinoma of the Lungs is not an occupational disease listed under the law. Pursuant to Annex "A" of the Amended Rules on Employees' Compensation, lung cancer is occupational only with respect to vinyl chloride workers and plastic workers.
• Insufficient Proof of Increased Risk: Petitioner GSIS maintained that respondent Mrs. Vicencio failed to show by substantial evidence that the risk of contracting the illness was increased by Judge Vicencio's working conditions.

• Cardiovascular Disease as Cause of Death: Respondent Mrs. Vicencio contended that per the Death Certificate, the cause of her husband's death was Cardiopulmonary Arrest T/C Fatal Arrythmia, and that the CA correctly found the requisites for cardiovascular disease to be compensable under paragraph (r) of ECC Resolution No. 432 were satisfied.
• Alternative Argument on Lung Cancer: Respondent Mrs. Vicencio argued that, assuming only lung cancer was the cause of death, the same was still compensable because the nature of Judge Vicencio's work and the corresponding difficulties brought about by his duties contributed to the development of his illness.

• Compensability of Death Benefits: Whether respondent Mrs. Vicencio's claim for death benefits under P.D. No. 626, as amended, is compensable.

• Compensability of Death Benefits: Yes. The death of Judge Vicencio was compensable under P.D. No. 626, as amended, because Cardiopulmonary Arrest T/C Fatal Arrythmia was properly considered a listed cardiovascular disease under Annex "A" of the Amended Rules on Employees' Compensation, and the requisites of ECC Resolution No. 432 were satisfied. Alternatively, even if lung cancer were the sole cause, substantial evidence showed that working conditions increased the risk of contracting the illness.

• Compensability of Death Benefits: P.D. No. 626, as amended, defines compensable sickness as any illness definitely accepted as an occupational disease listed by the Commission, or any illness caused by employment subject to proof that the risk of contracting the same is increased by working conditions. Under Section 1(b), Rule III of the Amended Rules on Employees' Compensation, a claimant must show either that the sickness is a listed occupational disease with the prescribed conditions satisfied, or that the risk of contracting a non-listed illness was increased by working conditions. The Death Certificate clearly indicated Cardiopulmonary Arrest T/C Fatal Arrythmia as the cause of death. Whether this was a mere complication of lung cancer or related to an underlying cardiovascular disease was not established by the records and remained uncertain. Because P.D. No. 626 is social legislation whose primordial purpose is to provide meaningful protection to the working class, and because Article 4 of the Labor Code mandates that all doubts in the implementation and interpretation of labor provisions be resolved in favor of labor, the Court adopted a liberal attitude and held that Cardiopulmonary Arrest T/C Fatal Arrythmia should be considered a cardiovascular disease — a listed disease under Annex "A." The stress and pressures inherent in judicial duties, coupled with the fact that Judge Vicencio was working in his office a few days immediately before his cardiac arrest, satisfied the requisites for cardiovascular disease under paragraph (r) of ECC Resolution No. 432. Alternatively, even if lung cancer were the sole cause of death, the claim remained compensable. While lung cancer is listed as occupational only for vinyl chloride and plastic workers, a non-listed illness is compensable if the claimant adduces substantial evidence that the risk of contracting it was increased or aggravated by working conditions. The degree of proof required is merely substantial evidence — such relevant evidence as a reasonable mind might accept as adequate to support a conclusion. The law requires a reasonable work-connection, not a direct causal relation; probability, not certainty, is the touchstone. It is not required that employment be the sole factor in the development of the illness; it is enough that employment contributed, even to a small degree. Judge Vicencio's work as a frontline officer in the administration of justice involved stressful daily work hours and constant, long-term contact with voluminous and dusty records. The Court took judicial notice that his workplace at the Manila City Hall had long been a place with sub-standard offices of judges and prosecutors overflowing with dusty records and poorly ventilated. All these factors, taken together, necessarily contributed to the development of his lung illness, as illustrated by the case of Dator vs. Employees' Compensation Commission, where cancer of the lungs was held compensable for a librarian exposed to dusty books under unsanitary conditions for 15 years.

• Liberal Interpretation of Employees' Compensation Law — P.D. No. 626, as amended, is social legislation whose primordial purpose is to provide meaningful protection to the working class against the hazards of disability, illness, and other contingencies resulting in loss of income. All doubts in the implementation and interpretation of the Labor Code and its implementing rules should be resolved in favor of labor, pursuant to Article 4 of the New Labor Code. Official agents charged with implementing social justice should adopt a liberal attitude in favor of the employee in deciding claims for compensability, especially where there is some basis in the facts for inferring a work-connection with the illness or injury.
• Substantial Evidence Standard for Compensability — The degree of proof required under P.D. No. 626 is merely substantial evidence, defined as such relevant evidence as a reasonable mind might accept as adequate to support a conclusion. What the law requires is a reasonable work-connection and not a direct causal relation. It is enough that the hypothesis on which the workman's claim is based is probable. Medical opinion to the contrary may be disregarded especially where there is some basis in the facts for inferring a work-connection. Probability, not certainty, is the touchstone.
• Two-Tiered Test for Compensable Sickness — For sickness and the resulting disability or death to be compensable under P.D. No. 626, as amended, the claimant must show either: (1) that the illness is a result of an occupational disease listed under Annex "A" of the Amended Rules on Employees' Compensation, with the conditions set therein satisfied; or (2) if not so listed, that the risk of contracting the disease is increased by the working conditions. It is not required that employment be the sole factor in the growth, development, or acceleration of the illness; it is enough that employment contributed, even to a small degree, to the development of the disease.

• "It is well-settled that the degree of proof required under P.D. No. 626 is merely substantial evidence, which means, 'such relevant evidence as a reasonable mind might accept as adequate to support a conclusion.' What the law requires is a reasonable work-connection and not a direct causal relation. It is enough that the hypothesis on which the workman's claim is based is probable. Medical opinion to the contrary can be disregarded especially where there is some basis in the facts for inferring a work-connection. Probability, not certainty, is the touchstone." — This passage articulates the evidentiary standard for compensability under P.D. No. 626 and is the canonical formulation of the "probability, not certainty" doctrine frequently cited in employees' compensation jurisprudence.
• "It is not required that the employment be the sole factor in the growth, development or acceleration of a claimant's illness to entitle him to the benefits provided for. It is enough that his employment contributed, even if to a small degree, to the development of the disease." — This defines the causal nexus required between employment and illness, lowering the threshold from sole causation to contributory causation, a principle central to the liberal interpretation of social legislation.
• "It must be remembered that P.D. No. 626, as amended, is a social legislation whose primordial purpose is to provide meaningful protection to the working class against the hazards of disability, illness and other contingencies resulting in the loss of income." — This passage establishes the interpretive framework for the Employees' Compensation law, mandating a liberal construction in favor of labor consistent with the constitutional guarantee of social justice.

• Buena Obra vs. Social Security System, G.R. No. 147745, April 9, 2003 — Cited for the principle that all doubts in the implementation and interpretation of the Labor Code and its implementing rules should be resolved in favor of labor, pursuant to Article 4 of the New Labor Code.
• Salalima vs. Employees' Compensation Commission, G.R. No. 146360, May 20, 2004 — Cited for the substantial evidence standard and the "probability, not certainty" touchstone in employees' compensation claims, itself citing Salmone vs. ECC and SSS.
• La O vs. Employees' Compensation Commission, G.R. No. L-50918, May 17, 1980 — Cited for the principle that employment need not be the sole factor in the development of an illness; it is enough that employment contributed, even to a small degree, to the development of the disease.
• Government Service Insurance System vs. Vallar, G.R. No. 156023, October 18, 2007 — Cited for the characterization of a judge as a frontline officer in the administration of justice and the most visible living representation of the country's legal and judicial system.
• Dator vs. Employees' Compensation Commission, 197 Phil. 590 (1982) — Cited as instructive precedent where cancer of the lungs was held compensable for a librarian exposed to dusty books and deleterious substances under unsanitary conditions for approximately 15 years, directly analogous to Judge Vicencio's prolonged exposure to dusty and poorly ventilated records.

• Section 1(b), Rule III, Amended Rules on Employees' Compensation — Defines compensable sickness as an occupational disease listed in Annex "A" with the conditions set therein satisfied, or any illness for which the claimant proves that the risk of contracting it was increased by working conditions. The Court applied this provision to establish the two-tiered test for compensability.
• Annex "A," Amended Rules on Employees' Compensation — Lists occupational diseases and the conditions under which they are compensable. Cardiovascular diseases are listed under paragraph (r); lung cancer is listed as occupational only for vinyl chloride workers and plastic workers. The Court held that Cardiopulmonary Arrest T/C Fatal Arrythmia fell under the listed cardiovascular diseases, and alternatively that lung cancer, though listed only for specific workers, was compensable through proof of increased risk from working conditions.
• Paragraph (r), ECC Resolution No. 432 (dated July 20, 1977) — Sets the conditions for cardiovascular disease to be compensable: (i) if the heart disease was known to be present during employment, proof of acute exacerbation clearly precipitated by unusual strain by reason of the nature of work; (ii) the strain of work bringing about an acute attack must be of sufficient severity and followed within 24 hours by clinical signs of cardiac insult; (iii) if a person apparently asymptomatic before being subjected to strain at work showed signs and symptoms of cardiac injury during performance of work and such symptoms persisted, a causal relationship is reasonable. The Court found these requisites satisfied given the stress of judicial work and Judge Vicencio's presence in his office days before his cardiac arrest.
• Article 4, New Labor Code — Provides that all doubts in the implementation and interpretation of the provisions of the Labor Code including their implementing rules and regulations should be resolved in favor of labor. The Court relied on this provision to justify a liberal interpretation in favor of compensability.
• Presidential Decree No. 626, as amended (Employees' Compensation law) — Defines compensable sickness as any illness definitely accepted as an occupational disease listed by the Commission, or any illness caused by employment subject to proof that the risk of contracting the same is increased by working conditions. The Court applied this definition to both the cardiovascular disease and lung cancer theories of compensability.

Antonio T. Carpio, Renato C. Corona, Teresita J. Leonardo-De Castro, and Lucas P. Bersamin concurred.