Since plaintiff's causes of actions are legally insufficient, we affirm the dismissal thereof. Plaintiff's cause of action for defamation is an improper attempt to circumvent the rule that an at-will employee has no cause of action for wrongful discharge ( see Ranieri v. Lawlor, 211 AD2d 601). As an at-will employee, plaintiff can have no cause of action based on a coemployee's alleged tortious interference with his employment ( see Thawley v. Turtell, 289 AD2d 169). Nor does plaintiff identify any specific employment or business relationship that he was prevented from entering into as a result of defendants' interference, or adequately allege that defendants acted with the sole purpose of harming him, such as would support a claim for tortious interference with prospective employment or business relations ( see Schoettle v. Taylor, 282 AD2d 411).