Courts turn to common law principles to analyze the character of an economic relationship (Master-servant), NY 8th Circuit stare decisis was established by Graves v. Women 's Prof 'l Rodeo Assoc., 907 F.2d 71, 74 (8th Cir.1990). “Where no financial benefit is obtained by the purported employee from the employer, no “plausible” employment relationship of any sort can be said to exist because although “compensation by the putative employer to the putative employee in exchange for his services is not a sufficient condition, it is an essential condition to the existence of an employer-employee relationship.”