Some 31 percent of the men and 11 percent of the women whose records Ms. Reid examined managed to achieve the benefits of a more moderate work schedule without explicitly asking for it. . . .So long as nobody knows you're blowing off work, you don't suffer for it.
What is fascinating about the firm Ms. Reid studied is that these people, who in her terminology were “passing” as workaholics, received performance reviews that were as strong as their hyper-ambitious colleagues. For people who were good at faking it, there was no real damage done by their lighter workloads.
But I think what this study really shows is that in many lines of work bosses have no idea how to measure their employees' productivity, so they fall back on silly measures like how many hours they think people are putting in. What do consultants do, anyway?