SUNTRACS (led by Genaro Lpez) is the leader union with the Coordinadora de Unidad Sindical (CONUSI) and promotes liberation theology (social concern for the poor and political liberation for oppressed peoples).
Led by Genaro Lopez, SUNTRACS has initiated three general strikes in the past few years, and has been the instrumental force within FRENADESO, the national coalition to prevent the privatization of Panama's social security. It is the leader union within Coordinadora de Unidad Sindical (CONUSI), the most radical of the major union federations in Panama. It has been closely connected with radical leftist groups and Padre Conrado Sanjur, an important local figure in liberation theology. In 2014, SUNTRACS members working on the Panama Canal expansion project engaged in a two-week strike, gaining an 11% pay increase over their previous US$3.99 per hour wage. SUNTRACS (National Union of Workers of Construction and Similar Industries; Spanish: El Sindicato Unico Nacional de Trabajadores de la Industria de la Construccion y Similares) is one of the leading trade union forces in Panama, with 40,000 members and a militant style of class war unionism. Liberation theology (Spanish: Teologia de la liberacion, Portuguese: Teologia da libertacao) is a synthesis of Christian theology and socio-economic analyses, that emphasizes "social concern for the poor and political liberation for oppressed peoples." 
