I'd say no. In 49 of 50 states, an employer does not need 'just cause' to fire you.
(1) The plaintiffs must prove the existence of a clear public policy (the clarity element). Henry H. Perritt Jr., Workplace Torts: Rights and Liabilities § 3.7 (1991) (hereinafter Perritt).
(2) The plaintiffs must prove that discouraging the conduct in which they engaged would jeopardize the public policy (the jeopardy element). Perritt § 3.14.
(3) The plaintiffs must prove that the public-policy-linked conduct caused the dismissal (the causation element). Perritt § 3.19.
(4) The defendant must not be able to offer an overriding justification for the dismissal (the absence of justification element). Perritt § 3.21. See also Collins v. Rizkana, 73 Ohio St.3d 65, 69-70, 652 N.E.2d 653 (1995) (adopting Perritt's four element test).