In a further example of how the labor movement is increasingly waging broad campaigns to highlight corporate behavior, the AFL-CIO launched a Web site Thursday that lets workers search for information about outsourcing and workers' rights violations at roughly 60,000 U.S. companies.

Launched through the nine million-member labor federation's community affiliate, Working America, the "Job Tracker 2.0" site provides data on recent health and safety violations, injury rates, violations of the National Labor Relations Act, as well as CEO compensation. Visitors can search the site by company name or by state or zip code.

"Too many of our employers are cutting corners, violating workers' rights and sending jobs overseas," said Richard Trumka, secretary-treasurer of the AFL-CIO. "We can start to right these wrongs by exposing corporate wrongdoing in our communities."

Mr. Trumka said the information in the site's database could help workers push for legislation, in particular. "It gives them greater ammunition to go to their representatives at the state and local levels to demand accountability," he said.

The site contains roughly half a million records, with data culled over several months from a combination of government sources such as the Occupational Safety and Health Administration, and media sources, according to Robert Fox, director of the site.

A previous version of the site which contained information about job outsourcing helped to generate hundreds of thousands of letters and faxes in support of the Employee Free Choice Act, according to Mr. Fox. That bill currently in Congress would allow unions to represent workers once a majority has signed authorization cards, among other things. "We're hoping to increase that further as we add additional information [to the site]," Mr. Fox said.

Working America, the community affiliate of the AFL-CIO, was formed in 2003 and has one million members, according to the AFL-CIO.