Labor law has been established as an independent area of law due tonecessity of protection of employee in the employment contract which is anextraordinary contractual relationship and which requires acceptance of emp- loyee for working under the authority of employer for safeguarding of job and revenue. Good faith principle, which is being used in all areas of law since theRoman Law era, has critical functions in the job relationship. This principle re- quires persons to deal honestly, fairly, and in good faith in using their rights anddischarging their obligations. These functions are more significant in accessoryobligations and limitation of managerial authority of the employer.