Knowledge and skills of a person are called ‘human capital’. A person’s stock of human capital is determined by her time-use choices. Based on the reasoning that policymakers must first learn what persons are already doing before designing public policies to enhance wellbeing, we focus on modeling people’s time-use choices across Illinois counties. Results suggest that persons without a high school or a college diploma do not spend much time on education or skill development activities.We have developed a software that shows how much workers in Illinois counties, the 25+ age group with different levels of qualifications, are investing in (and valuing) skill development. Policymakers can build on this research to help workers gain the most for their investments in education and training.