Occupational Safety and Worker Preferences: Is There a Marginal Worker?
研究发现非工会企业的职业安全水平只反映工龄0-3年工人的偏好，而工龄更长的工人偏好更低的安全水平，导致市场效率低下。
Occupational safety levels in nonunion firms are empirically shown to reflect only the preferences of workers with zero to three years job tenure. Therefore, ex post, the market is inefficient even if workers were optimizing at the time of hire since there are trades possible among workers that would make all workers better off. The workers who are ignored in the safety-setting process, those workers with more than three years job tenure, prefer less, not more, safety. Copyright 1987 by MIT Press.