Advancing women in the workplace is not only the right thing to do; it’s the smart thing to do. But Catalyst CEO Jennifer McCollum says we’ve left someone very important out of the conversation: men.

Inclusive workplaces are essential to build high-performing teams, fuel collaboration and innovation, spark trust and belonging, and attract and retain the best people. Yet even today, women continue to be left behind. How can we fix this?

The surprising answer: By shifting the conversation to include men.

In Men at Work, Jennifer McCollum, President and CEO of Catalyst, a nonprofit that helps companies create high-performing workplaces by advancing women and accelerating inclusion, shares the secret: engaging men as gender partners. Drawing from both honest human stories along with original Catalyst research data, McCollum demonstrates that we can’t advance women without the participation of men as mutually accountable partners.

Men At Work centers on freeing men from the pressure to exclusively behave in ways that reinforce rigid masculine traits and behaviors—being competitive, aggressive, and stoic. Without blaming or shaming anyone, McCollum shows men how enriching it is to break free of norms and how to do it. She presents takeaways from interviews with men and women at leading companies around the globe who have successfully created inclusive work cultures. She also shares insights from Catalyst’s MARC (Mutual Accountability, Real Change) initiative, which provides the understanding, language, and behaviors men—and everyone—can use in their day-to-day work as they move toward becoming gender partners.

The great news is that men want to experience inclusion and belonging, which everyone deserves. Men at Work gives them permission and the practical tools for doing so, in a way that helps men and women alike to thrive at work.