This study aims at disentangling the returns to formal, non-formal and informal training and fills key knowledge gaps. Informal learning is found to be by far the most common form of job-related learning at work. Learning informally at work is found to be associated with 3.5% higher wages, on...

The paper reexamines the employer size-wage puzzle using NLSY79 data. The empirical results show that even for those who never receive any training from their employers, size-wage premium still exists and is quantitatively important. Wage increases associated with receiving on-the-job training...