Work accident claim dismissed because heart attack was a delayed effect of stress, not a sudden external cause.

The Supreme Court dismissed the plaintiff's claim to establish a work accident resulting in a heart attack. The court found that while the plaintiff faced extreme stress and overwork during flood relief duties, the heart attack was a delayed consequence of these conditions rather than a sudden event caused by an external factor at the time of the illness. Consequently, the court ruled that the legal definition of a work accident requires both a sudden cause and an immediate effect, which were absent in this case.