Sounds like another great learning opportunity. Have to capitalize on them. 
I am amazed at some of the absurd laws, policies and disclaimers in the world . . . most are likely the result of an incident bring the need to light. Lying my not require a policy, but a line on the job description could save you some unemployment insurance. Joker did what he felt was the right decision. The idea to write a policy in mistake pizzas could be useful in clarifying for everyone the expectations, or it may be overkill. We make so few mistake pizzas that it isnāt an issue 