本論文探討政府調整基本工資對於廠商行為的影響。
由於過去文獻對於廠商聯合行為形成原因探討不足，
本文承續過去文獻在研究需求面波動所導致的聯合行為架構下，
再加入供給面的影響因素，從政府政策面的干擾，分析實施基本工資所引發的供給面成本增加是否將誘發廠商出現聯合行為。

本論文利用台灣地區工商普查1986、1991、1996、與2001年的資料，
將產業分為製造業與服務業進行實證迴歸分析，實證結果發現，基本工資的調漲確實有可能會引發廠商出現聯合行為，但是當產業之間具有上下游關係時會出現彼此相反的結果。

同時，本文也發現以國內生產毛額作為探討景氣循環的變數時，其對廠商聯合行為的影響事實上十分渺小，這顯示廠商在決定彼此之間是否要進行聯合行為之時，當下景氣的好壞並不是一個絕對重要的條件。此外，在低集中度的競爭產業中，本文發現廠商有可能會因為供給面因素而出現聯合行為。

This thesis studies the possibilities of collusion
by considering both of the market's demand and supply side fluctuating.

Most previous literature ignore the effects of supply factors on collusion such as cost increased since the implementation of minimum wage, while the minimun wage may cause a stronger incentive for firms to collude.

With using the firm-level data in manufacturing and service industries in Taiwan,we find that firms collude significantly when the minimum wage is increased,
and we also find that business cycle has weaker effects on collusion.

In addition,even if the market concentration is lower,  the firms still have stronger opossibility to collude due to the increased minimum wage.

1 前言 1
2 文獻回顧 6
3 台灣基本工資的發展概況 11
4 聯合行為與價格追隨 14
5 實證方法與資料 16
5.1 資料說明 16
5.2 實證變數說明 18
5.3 實證模型 20
6 實證結果 23
7 結論 27

表目錄
台灣地區歷年基本工資調整過程 32
製造業基本變數統計表 33
廠商聯合行為的迴歸結果(製造業一階段估計)---全部樣本 34
產業別迴歸結果(製造業一階段估計)I 35
產業別迴歸結果(製造業一階段估計)II 36
產業別迴歸結果(製造業一階段估計)III 37
產業別迴歸結果(製造業一階段估計)IV 38
依產業集中度分組的迴歸結果(製造業一階段估計) 39
廠商聯合行為的迴歸結果(製造業兩階段估計)---全部樣本 40
產業別迴歸結果(製造業兩階段估計)I 41
產業別迴歸結果(製造業兩階段估計)II 42
產業別迴歸結果(製造業兩階段估計)III 43
產業別迴歸結果(製造業兩階段估計)IV 44
依產業集中度分組的迴歸結果(製造業兩階段估計) 45
服務業基本變數統計表 46
廠商聯合行為的迴歸結果(一階段估計)---服務業全部樣本 47
產業別迴歸結果(服務業一階段估計)I 48
產業別迴歸結果(服務業一階段估計)II 49
產業別迴歸結果(服務業一階段估計)III 50
依產業集中度分組的迴歸結果(服務業一階段估計) 51
廠商聯合行為的迴歸結果(兩階段估計)---服務業全部樣本 52
產業別迴歸結果(服務業兩階段估計)I 53
產業別迴歸結果(服務業兩階段估計)II 54
產業別迴歸結果(服務業兩階段估計)III 55
依產業集中度分組的迴歸結果(服務業兩階段估計) 56

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