If company leaders want to know whether their employees like their jobs and enjoy their work, one of the best places to find the answer is in the earnings report.

Research continues to show that employees who enjoy doing what they’re doing and where they’re doing it are more engaged, more productive, and less likely to quit (or even look for another job) than employees who dislike, or are ambivalent about, their work. And for some companies, this shows up in company earnings.

According to a Pew Research Center survey, released in mid-December, half of all U.S. workers told Pew researchers “they are extremely or very satisfied with their job.” An additional 38% said they are only somewhat satisfied.

Of course, survey data only provides a point-in-time snapshot of what’s going on in the respondent’s world. The answers people give depends on what they’re asked and many other factors, ranging from, but not limited to, the time of day (Have they had their first cup of coffee yet?) or, in this case, perhaps, their boss’s mood that day (grouchy, with a side of passive-aggression?).