Mexico’s Senate altered a bill that eases the process of hiring and firing workers, approving greater union transparency, and sent it back to the lower house for a final vote. Parties reinstated some union oversight measures, such as secret voting and periodic expense reports from leaders…Supporters of the bill say it will foster job creation…PRI Senator Humberto Mayans said the union measures violate international treaties and requiring a secret vote goes against laws that give unions “the right to create their own statutes and regulations.”…The labor bill would allow temporary and trial-basis contracts and hourly wages, while regulating outsourcing and limiting the amount of back-salaries employers must pay if they lose legal disputes with workers. Thousands protested in Mexico City against the initiative in weeks leading up to the vote, saying it erodes workers’ rights.