A bill that would require large companies in California to trace the supply chain of their products to ensure that no forced labor was used advanced in the state legislature.

From the AP (via IHT):

The legislative committee sent the bill to the full Senate on a 3-2, party-line vote. Republicans voted against it but did not speak in opposition.

California Chamber of Commerce spokeswoman Denise Davis said business groups have not taken a position on the bill by Democratic Sen. Darrell Steinberg.

It would prompt companies to use their economic leverage to prevent human rights abuses by their suppliers. They also would have to make public their anti-slavery policies.

“We’re trying to create awareness, public education and a societal commitment to end slavery and human trafficking,” Steinberg said.

His bill exempts companies that have less than $2 million in annual sales.

Steinberg cited studies showing that victims often are forced to work in the sex trade, as domestic servants, at hotels or farms in addition to manufacturing. A 2005 U.S. Department of Justice study estimated that 80 percent are women and half are minors.

His bill has to pass the Senate and the state Assembly before it can be sent to Gov. Arnold Schwarzenegger.

Human trafficking is a $32 billion industry.