Post-schooling off-the-job training (Off-JT) is common, but little is known about how recent benefits vary across levels of formal education. Using a fixed-effects difference-in-differences regression coupled with the National Longitudinal Study of Youth 1997 data, I estimate how Off-JT certificate completion impacts employment and real (2014) annual income. Among those with a college degree, there is a significant increase in annual income. The total effect when individual-specific linear time trends are included ranges from $4,803.6 to $5,844.7. In contrast, for those with less than a college degree there is no significant change in income, despite a significant increase in employment. This is likely due to the small impact on hours worked for those without a college degree (an increase of 27 hours over the year, on average). The results suggest that the recent returns to Off-JT certificate completion depend on the formal level of education acquired prior to Off-JT.

学后脱产培训 (Off-JT) 很常见，但人们对不同正规教育水平的近期收益有何不同知之甚少。使用固定效应差异回归以及 1997 年全国青年纵向研究数据，我估计了非日本技术学院证书完成对就业和实际（2014 年）年收入的影响。在拥有大学学历的人中，年收入显着增加。包含特定于个人的线性时间趋势的总影响范围为 4,803.6 美元至 5,844.7 美元。相比之下，对于那些没有大学学位的人来说，尽管就业显着增加，但收入没有显着变化。这可能是因为对没有大学学位的人的工作时间影响很小（平均每年增加 27 小时）。