The purpose of this report is to describe the extent of adult learning in a comparative perspective. The goal is to present a comprehensive portrait of adult learning including participation in organized forms of adult learning (formal and non-formal learning) as well as informal learning. The report addresses differences in participation between selected countries and within Canada and notes changes in participation patterns. Better knowledge of changes in adult learning patterns including the barriers and motivations to engagement in adult learning is critical to future policy development in the area. The information in this report provides a starting point for further research.