Differences in workers' skills aren't always the biggest reason for pay inequality, a study reported in Bloomberg Dec. 9 reveals.
New data from the Organization of Economic Cooperation and Development shows that about one-third of wage inequality is caused by differences in company policy.
High-wage companies pay about twice as much as low-wage companies for the same type of work, according to the report.
The trend of more women working at low-wage firms than men is widening the gender pay gap, the report found.