The employee suffered a heart attack at the work place during working hours. According to the expert’s report however the attack had commenced before the employee’s arrival at work. In light of the conclusions of the expert’s report, the National Institute of Social Security refused to consider the heart attack as a workplace incident. The Supreme Court held that the fact that the symptoms manifested before the employee had started his working day was irrelevant when deciding whether the incident was an ordinary or workplace incident. It is the critical moment that has to be taken into consideration when determining the protection the Social Security system should provide to the affected individual.