A retailer's decision not to close earlier than its regular closing time even though a storm warning makes it unlikely that there will be any more customers that day is an example of rule utilitarianism.

Rule Utilitarianism

A theory in ethics which suggests that the correctness of an action depends on whether it conforms to a set of rules that, if universally followed, would lead to the greatest good for the greatest number.

Storm Warning

A weather alert indicating that a storm, typically severe, is imminent or occurring within a specified area.