An employment contract is a legal agreement that governs the terms according to which one or more parties provide personal services for one or more other parties, typically in the context of an employeremployee relationship. A contract may be express, that is, reciting terms for performance between the parties, or it may be implied in the law according to the behavior of the parties. The regulatory frameworks, policy justifications, and business practices that govern employment relationships vary widely across jurisdictions, with the two principal approaches being employment-at-will and for-cause regimes.