G.R. No. L-23640 - Vda. de Layag vs. Republic

Alberto Layag was employed by the Bureau of Public Works since 1948 as the chief-cook on the tugboat M/V Chester.
His pre-employment physical examination qualified him for the job, and he received a daily wage of P6.50.
His regular duties included marketing, cooking food for the crew, setting the table, washing dishes and utensils, and, on certain occasions, assisting in cleaning the deck.

In 1949, Layag was allegedly hospitalized at the Cagayan de Oro Hospital.
In 1955, he contracted influenza and experienced symptoms such as spitting blood.
On January 23, 1960, he was confined at the San Lazaro Hospital due to fever, body weakness, and brown spots on the skin, which his attending physician diagnosed as hemorrhagic fever.
From February 8, 1960 to March 2, 1960, he was admitted at the North General Hospital for hypoplastic anemia and ascariasis, and was later re-admitted for the same illness.

Alberto Layag died on March 29, 1960, the cause of death being thrombocytopenic purpura with cerebral hemorrhage and hypoplastic anemia.
His widow, Remedios Malupa Vda. de Layag, filed a death benefit claim for herself and on behalf of all their minor children.
The Workmen’s Compensation Commission, through its Chairman Mrs. N. Baens del Rosario, turned down the claim on the basis that the illness leading to death lacked a causal nexus with his employment duties.

The Commission examined the duties performed by the deceased and found them to be limited to those typical of a chief-cook, without any indication of performing extra arduous tasks such as scrubbing floors or painting.
It relied on a medical study conducted by its senior medical officer, detailing that thrombocytopenic purpura can be either primary or secondary, with the secondary form often related to other external factors such as toxic substances or infiltration by foreign cells.
The study indicated that the clinical causes leading to cerebral hemorrhage and hypoplastic anemia were part of the illness process, distinct from the usual work-related activities.

The primary issue is whether the cause of death—thrombocytopenic purpura with cerebral hemorrhage and hypoplastic anemia—was service connected.
This raises the question of whether the clinical illness can be causally linked to the nature of the employment and the duties performed by the deceased.

Whether the medical study provided by the Commission’s senior medical officer, despite not being formally offered with notice to the claimant, was competent and sufficient to determine the causation of death.
The applicability of Section 43 of the Workmen’s Compensation Act, which presumes service connection in the absence of substantial evidence to the contrary.