A new survey shows a pay gap among the chief of staff for Couillard government cabinet ministers.

The survey, conducted by The Canadian Press, showed female chiefs of staff made 12 per cent less than their male counterparts, on average.

The average salary for a male was $141,856 in 2016, whereas the average salary for a female was $124,653, for a difference of $17,203.

That data is based on a table produced by the Executive Council for the 2015-2016 fiscal year, which had been updated to reflect changes in the departments of ministers Martin Coiteux and Helene David.

Chiefs of staff act as the head adviser to ministers and the premier. There are 28 such positions in the current government, with 13 of those being women.