According to a study being published next month, male bosses "pay themselves significantly more once they become fathers." The Economist explains what this means for workers:
Male employees bear the brunt: if the boss’s child is a son, for example, they can expect 0.5% less salary than if he hadn’t reproduced. Female staff fare better. After their boss’s first child, they can expect to be paid a little more. [David Ross of Columbia Business School, one of the authors] speculates that this might be because, having seen their wives go through childbirth, they start to respect women more. Alas, such goodwill doesn’t last. Once the boss has a second child, female workers’ wages are likely to fall, just like men’s.