Ageing and labor productivity
利用挪威政策导致的老年工人（63-67岁）劳动力供给变化，研究企业内劳动力老龄化对劳动生产率和年轻工人需求的影响。结果不精确，但显示老年工人比例提高会增加总工资成本，短期对劳动生产率有小幅正面影响，同时显著减少年轻工人（30岁以下）的招聘。
We exploit a policy-induced shift in the labor supply of elderly (age 63–67) workers in Norway to explore how aging of the workforce within existing firms is likely to affect labor productivity and the demand for younger workers. Our results are imprecise, but indicate that a higher share of age 63–67 workers increases total wage costs and has a small positive effect on labor productivity in the short run. Postponed retirement of existing elderly workers leads to a significant decline in the hiring of younger (below age 30) workers.