This paper presents the second part on opinions given by the Polish Supreme Court on the acceptance of myocardial infarction as work accident. This it can be seen that, in certain cases, the judgements of the Court are contradictory. For in some cases, an external cause is recognized in the act of permitting employees to work whose state of health would contraindicate the performance of their duties, while in others, the principle is accepted that work duties not considered harmful for healthy people cannot be deemed an external cause for people with health problems. An external cause according to the Supreme Court may also be the act of allowing an employee to work without a valid medical examination, or even by not conducting routine required work-related medical examinations on time.