The purpose of this article is to develop a framework to understand and assess the quality of learning environments in the workplace. It is argued that indicators used to measure and assess informal learning at work, at both the national and the enterprise level, are underdeveloped. Consequently, current frameworks to measure and benchmark learning are heavily biased towards education and formal training. A new framework is developed, based on a quantitative survey representative of the private sector in Norway. The framework consists of seven learning conditions, which have significant effects on informal learning at work. Implications for further research, policy and practice are discussed.