That's what a number of governmental organisations, such as the EU Commission, research centres and analysts have claimed.
So while we do know there is a gender pay gap, Glassdoor, the jobs review and recruitment marketplace, released a report to determine exactly why that is.
The report, entitled "Demystifying the Gender Pay Gap," looked at a data set of more than 534,000 salary reports shared on Glassdoor by employees and provided like-for-like comparisons.
Due to the sheer amount and specificity of the data, Glassdoor was able to then provide an adjusted gender gap percentage.
Glassdoor said it made sure the pay data is compared and crunched on a more like-for-like basis to give a more accurate reading.
And while there is a gender pay gap - this chart shows how is not as bad as you think it is.
Glassdoor
The figures show that if you just put all of women's pay into one pot and calculated an average and then did the same for men, the unadjusted pay gap between men and women in the
However, if you factor in "statistical controls" - the gap tightens to 5.5%.
So yes, there is a gender pay gap but it isn't as bad as many may first think.
This story was originally published by Glassdoor.