My husband and I have a small business in Calif. One of our employees has been acting irrational, and approached another employee and asked if he had any drugs for sale. Because of this incident we asked him to go get drug tested. He failed his drug test for both ampehtamine, and methanphetamines. Can we fire him because of this and NOT have to pay unemployment? Bottom line we don't want to pay him unemployment - what do we need to do in order to avoid this?