The term "contract in/out" can be closely associated with the concepts of hiring and employment. The term refers to an agreement between employees and employers, stipulating the conditions of a job. Some synonyms for "contract in/out" include a memorandum of understanding (MOU), which describes the understanding between two or more parties, and an employment agreement, which lays out the terms and conditions of a job offer. Another similar term is "engagement," which refers to a period of employment. All these terms are similar to "contract in/out" and are widely used in the corporate world.