If an ex-employee murders a manager, what is the correct classification of that crime?

The classification of the crime in which an ex-employee murders a manager is considered murder. Murder is defined as the unlawful killing of another person with malice aforethought, meaning that the perpetrator had the intention to kill or cause serious harm. In this case, the act committed by the ex-employee clearly involves a deliberate intention to end the life of the manager, which fits the legal criteria for murder.

Manslaughter, on the other hand, typically involves a lack of malice aforethought, often arising in situations of provocation or heat of passion. Assault generally refers to the threat of harm or actual physical violence that does not result in death, which is not applicable in this scenario. While felony is a broad term that encompasses serious crimes, it does not specify the nature of the act as precisely as murder does. Therefore, considering the context and the definitions, murder is the most accurate classification for the actions described in the question.