In recent years, labor relation has become diversified. An increasing number of people are working outside the employment contract. Some of them are trying to avoid the application of labor law, not with standing it will still be consider as employment relationship necessarily. This paper introduces the ILO's Employment Relationship Recommendation in 2006, in which the ILO Member States define the scope and meaning of the "employment relationship", and established a clear standards for measurement. This paper also discusses the application of about standards in Japan, are still ambiguous but will become more and more important to the applications in the future.