Wagenseller's (P) supervisor at Scottsdale Hospital (D1) was Smith (D2). P's relationship with D2 began to deteriorate when P refused to join in a 'mooning' skit during a company camping trip. P was terminated and sued D1 and D2; her nonparticipation in the skit was the reason for her termination. P's action was terminated by summary judgment; an at-will employee could be fired for any reason. The Court of Appeals affirmed. The Arizona Supreme Court granted review.