Problem 1: Should an employer ever be held liable for murder in the death of an employee? Is there a point where an employer is so uncaring about employee safety that you would say the act was criminal and the employer liable?
This is a legal (criminal negligence) as well as a moral or ethical issue. Google "negligence in the death of an employee" for some case examples. But, irrespective of legal liability ...
Problem 2: What do you think, in general terms, are the obligations of an employer to protect the health and safety of its employees?