When the plaintiff oral surgeon hire a new associate, Multari, the parties signed a contract containing a non-competition clause. The clause provided that Multari upon termination of the employment contract would not compete for three years within a five-mile area. After 17 months, Multari gave the agreed six months' notice that he was resigning and opened his own oral surgery practice within the same city. The plaintiff sought to enforce the restrictive covenant, but the defendant argued that it was not reasonable. What factors will the courts consider when asked to enforce non-competition clauses in employment contracts