This study analyzes the role of institutional, demographic, and socioeconomic factors in influencing adolescents’ daily activities. Previous studies suggested that adolescents’ daily activities are closely connected to their well-being and accumulation of skills, which motivates the study on the inconclusive question of how micro-level and macro-level factors intersect in influencing adolescents’ time use in contemporary societies. We use data of 3,457 diaries reported by adolescents aged 11-17 in France (2009-10), Spain (2009-10), and the United Kingdom (2014-15). These three countries represent three contexts with important variations in their policy and cultural characteristics. Our analyses look at five activities that are seen as important markers of adolescents’ well-being and skills formation: (1) educational activities; (2) television time; (3) electronic activities; (4) sleeping; (5) sports. We pay particular attention to three key micro-level factors: (i) social background, (ii) family structure, and (ii) maternal employment. We believe that this study, currently in a preliminary stage, can offer interesting insights into how adolescents’ daily lives differ across societal and family contexts in ways that reflect variations in their potential well-being and formation of skills.