Job Switching, Job Tenure, and Wage Dynamics: An Empirical Study on College Graduates in Taiwan

Abstract

本研究主要目地在利用一組青輔會的大專畢業生縱橫資料(panel data)，來估算初入勞動市場兩年的大專畢業生薪資變化的情況。我們先建立一個傳統的薪資決定模型，其中包含工作期間、工作經驗、學用配合程度、及畢業生個人特性等解釋變數。然後，利用此一薪資函數，我們可以估計出工作期間、工作經驗、與工作轉換等個別因素對於薪資變化的影響。對於所有已有工作的畢業生而言，我們發現工作期間對於薪資成長的貢獻高達65.8%，工作轉換的貢獻為26.5%，以前的工作經驗的貢獻為10.6%。出乎我們意料之外的是，學用配合程度對於薪資變動的貢獻卻是負的，-3.1%。此外，如果只考慮曾經轉換工作的畢業生，工作期間、工作轉換、工作經驗、與學用配合對於薪資變動的貢獻比例，則分別為37.2%、50.4%、17.4%及-5.0%。

Using a panel data set of college graduates in Taiwan, this study computes the wage dynamics for college graduates who have been on the market for just two years. A traditional wage function is estimated first with explanatory variables including job tenure, work experience, degree of job match, and individual characteristics such as level of education, field of study, and gender. Then, by using the estimated wage function, the impact of job tenure, work experience, job match, and job switching on wage dynamics are calculated separately. We find that, for all workers, job tenure accounts for 65.8% of wage changes, job switching for 26.5%, and work experience for 10.6%. To our surprise, the degree of job match has a slightly negative impact on wage changes, namely, -3.1%. When only workers who have changed jobs are considered, the proportion of wage changes accounted for by job tenure, job switching, work experience, and the degree of job match are 37.2%, 50.4%, 17.4%, and -5.0%, respectively.