California Expands Gender-Based Wage Protections by Adopting “Substantially Similar” Test and Requiring Employers to Justify Wage Discrepancies


The California Fair Pay Act, which goes into effect on January 1, 2016, prohibits employers from paying employees less than the rate paid to members of the opposite sex who perform “substantially similar” work.  Although current laws prohibit wage discrimination within the same establishment for the same work, the new law expands the geographic scope to include all of an employer’s locations (even outside of California) and expands the scope to include “substantially similar” work, not just “equal work.”  An example, as offered by State Senator Hannah-Beth Jackson, is a female housekeeper who cleans hotel rooms at one location may challenge the higher wages paid to male janitors who clean the lobby and banquet halls at another location.  We summarize the law below.

What the Law Does:

Mechanically, the law does three things:

What the Law Does Not Do:

The law does not mandate that employers pay everyone the same for substantially similar work.  It does, however, shift the burden to employers to prove that any discrepancy between wages paid to different genders is based upon one or more of the following:

The Law’s Effect:

While the new act unquestionably exposes employers to more litigation, it is unlikely to rock the workplace like other recent California legislation, such as paid sick leave.  The new law makes clear that employer policies may not prohibit employees from sharing compensation or wage data.  And it underscores the importance of training human resources professionals and supervisors in compensation practices .

Action items:


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National Law Review, Volume V, Number 281