An advisory group said Friday that federal employees on average remain about 35 percent behind the private sector in pay.

Official average pay gap with comparable private sector jobs now exceeds 35 percent.

President Obama has ordered a review of whether policies on how salaries are set when federal employees are first hired and when they are promoted are contributing to a gender pay gap.

An advisory council has reported that pay of white-collar federal employees is nearly 35 percent behind the private sector on average, moving the controversy over pay comparisons along for higher-level consideration.

White collar federal employees are underpaid on average by about 34 percent compared with the private sector, an advisory group said Friday.