The increasing use of social media at work offers organizations new opportunities for employee learning on the job. This study investigated the relationship between social media use and learning activities undertaken by employees. It was expected that social media use relates to higher levels of learning and that this relationship is stronger when employees perceive higher levels of an organization culture that stimulates dialogue and inquiry. A total of 590 respondents of three multinationals based in the Netherlands completed a survey. As expected, results showed that the more often employees used social media in their job, the more often they participated in learning activities. Contrary to expectation, this relationship was not influenced by culture of dialogue and inquiry. Instead, the perception of a culture of dialogue and inquiry directly related to learning on the job. The findings suggest that organizations could consider stimulating the use of social media among employees to support work‐related learning.