The aim of this paper is to discuss the importance of personality test in the employment in this highly competitive world of business. The compatibility of the companies have increased as they are expanding from countries to countries and exploring new markets. This is the reason why the sustainability factor has become an important part of the companies which is mainly served by buy the employees. The human workforce is the main asset of any business organisation therefore making the base strong and effective, the companies into to hire more efficient persons so that they get more competitive advantage. This paper will be discussing for articles all Peer reviewed in support of using personality tests for understanding the capabilities of the job applicants.