William D. Black has been practicing law in the Phoenix metropolitan area for more than 30 years and has considerable experience with restrictive covenants. Noncompete agreements are enforceable contracts under Arizona common law.Enforceability of Restrictive Covenants in Arizona. By Robert D. Mitchell. By Wendy M. Anderson, Esq. Non-compete agreements between a lawyer and law firm are also illegal. Find legal resources and guidance to understand your business responsibilities and comply with the law. What is fair employment? All people have the right to compete for any job for which they qualify and to work in an environment that is free from discrimination. Non-Compete Agreement Template.