“…Although the relationships among unions, collective bargaining, and wages have been investigated in developing countries [2], the literature is nearly silent on other clauses included in collective bargaining agreements that do not directly determine the level of employment and can be thought of as part of non-wage labor costs. For instance, in Argentina and Uruguay, contracts in the early 1990s included provisions covering the introduction of new technology, training programs, and rules based on productivity advances [9], [10]. Other practices subject to negotiation included working conditions, length of the work week, paid holidays, workplace safety, work environment, job equipment, promotions, and job descriptions.…”