A seventh woman has signed onto a proposed $100 million class action accusing Morrison & Foerster of holding back the careers of mothers and pregnant women through unequal pay and promotion opportunities.

Lawyers at Sanford Heisler Sharp, led by chairman David Sanford, filed a second amended complaint Friday in San Francisco federal court, adding further allegations to the gender and pregnancy discrimination case that their clients first brought nearly a year ago. The lawsuit, which alleges that “the mommy track is a dead end” at the firm, came as one of several gender-related discrimination lawsuits brought by Sanford Heisler against large law firms.