The Real Effect of Smoking Bans: Evidence from Corporate Innovation
研究发现美国各州逐步推行的工作场所禁烟法显著提升了企业专利数量和引用次数，尤其执法严格或原有控烟较弱的州效果更强，可能通过改善发明人健康和生产力实现。
We identify a positive causal effect of healthy working environments on corporate innovation, using the staggered passage of U.S. state-level laws that ban smoking in workplaces. We find a significant increase in patents and patent citations for firms headquartered in states that have adopted such laws relative to firms headquartered in states without such laws. The increase is more pronounced for firms in states with stronger enforcement of such laws and in states with weaker preexisting tobacco controls. We present suggestive evidence that smoke-free laws affect innovation by improving inventor health and productivity and by attracting more productive inventors.