Over time, at-will regimes have developed a number of exceptions. See Cynthia L. Estlund, Wrongful Discharge Protections in an At-Will World, 74 Tex. L. Rev. 1655, 1655 (1996) [hereinafter Estlund, Wrongful Discharge]. The most prominent of these forbids discharge on grounds that violate an important public policy. See, e.g., McGarrity v. Berlin Metals, Inc., 774 N.E.2d 71 (Ind. Ct. App.) (holding that plaintiff may maintain tort action for wrongful discharge after dismissal for refusing to take actions that could subject him to personal liability), transfer denied, 783 N.E.2d 703 (Ind. 2002); E. Allan Farnsworth, Contracts § 7.17, at 557-58 (2d ed. 1990).