Solar Plexus Bar and Night Club allowed by tolerance 50 Guest Relations Officers (GRO) to work without compensation in its establishment under the direct supervision of its Manager from 8:00 p.m. to 4:00 a.m. every day, including Sundays and holidays. The GROs, however, are free to ply their trade elsewhere at anytime but once they enter the premises of the night club, they are required to stay up to closing time. The GROs earned their keep exclusively from commissions for food and drinks, and tips from generous customers. In time, the GROs formed the Solar Ugnayan ng mga Kababaihang Inaapi (SUKI), a labor union duly registered with DOLE. Subsequently, SUKI filed a petition for certification election in order to be recognized as the exclusive bargaining agent of its members. Solar Plexus opposed the petition for certification election on the singular ground of absence of employer-employee relationship between the GROs on one hand and the night club on the other hand. May the GROs form SUKI as a labor organization for purposes of collective bargaining? Explain briefly. (2012, 1999 BAR)