When it comes to selecting an employer that will value their expertise, voice, and career goals, scientists use a specific metric: safety. On the day of a critically important meeting that had been in the works for months, Gene Sullivan had a funeral to attend. When the chief product strategy officer at Insmed (No. 1), a global biotech company based in Bridgewater, New Jersey, learned of a death in his family that would compel him to miss the conversation, he emailed his boss, the CEO. Within minutes he received a response that elicited a sigh of relief: Don’t worry about the meeting at all, the email stated, we’ve got your back. His boss’s simple and caring response meant the world to Sullivan and is an emblem of Insmed’s dedication to its employees. “It’s reflective of the CEO, and a lot of our culture comes from him,” says Sullivan, noting that this wasn’t the only time he had observed this kindness. “When an esteemed researcher in our group was ill, the entire org...