Jorge Parra smiled and laughed as he opened his mouth, no longer bound by thread, and bit into his first meal in 22 days. About an hour earlier, at 10:00pm on August 22nd, Mr. Parra signed an agreement with General Motors on behalf of the Association of Injured Workers and Ex-Workers of General Motors Colmotores (Asotrecol) that outlined a framework for mediation between the parties.