they are doing things that favor them and collecting decent amount of money out from the house, sad to say it cost them their lives and now being revealed.
Thats cost them their lives. For the owner, he can just punish them without doing worse or killing them. The best he can do is fire them off their job or ask them for penalty regarding the violation they commited which is probably against the rule of the company. But killing them secretly its not a good punishment and even not allowed in the eyes og God. Yeah provided they make mistake but it doesnt allow you or anyone to do unhumane act.