為了調查2007年7月臺灣基本工資大幅調漲後對勞動市場的影響，本文透過rigorous LASSO模型識別出容易受到政策影響的低薪群體，並應用差異中的差異（Difference-in-Differences, DID）架構進行分析，根據不同地區對基本工資曝露程度的變化來建立實驗組和對照組。研究發現，基本工資上漲確實提高了工資，但對就業、工時和部分工時勞工比例沒有顯著影響。此外，這些結果在整體樣本和不同人口子群體中均得到了驗證。值得注意的是，對於具有大學學歷以上的群體，基本工資調漲對其工資並未顯著變化，但對就業有正面影響。

To investigate the impact of the significant minimum wage increase in Taiwan in July 2007 on the labor market, this study employs a rigorous LASSO model to identify low-wage groups that are likely to be affected by the policy. The analysis utilizes a Difference-in-Differences (DID) framework, establishing treatment and control groups based on variations in exposure to the minimum wage across counties. The findings indicate that the minimum wage increase indeed led to higher wages but had no significant impact on employment, hours of work, or the proportion of part-time workers. Moreover, these results were consistent across the full sample and various demographic subgroups. Notably, for individuals with a college education or more, the minimum wage increase did not significantly affect their wages but had a positive impact on employment.

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