日本における外資賃金プレミアム : 初任給の分析 (The Foreign Wage Premium in Japan: An Analysis of Starting Salaries)

Japanese abstract: 本論文は外資系企業が内資企業に比べて高い初任給を支払っているのか否かを検証する。日本の事業所と労働者の情報を接続した横断面のデータによって分析を行った結果、外資系事業所が内資系事業所に比べて平均的に高い初任給を支払っていること、外資比率が高い事業所ほど、初任給が高い傾向が高学歴男性を中心に広く見られることが明らかになった。外資系の初任給が高いという結果が、(1) 外資への参入障壁を意味しているのか、(2) 外資が採用する労働者の能力が高いのか、(3) 外資が高い初任給を支払えるほど生産性が高いのか、横断面のデータからは十分な識別はできないが、従業者規模や学歴によって制御してもなお外資比率が高い事業所の初任給が高いことは、外資系企業の労働市場の参入に一定の参入障壁が存在することを示唆する。English abstract: This paper examines whether foreign-owned firms pay higher starting salaries than domestic-owned firms. Using cross-sectional data on Japanese establishments and workers, I find that foreign-affiliated establishments pay higher starting salaries on average than domestic-affiliated establishments. I also find that the establishments with a higher proportion of foreign capital tend to pay higher starting salaries, especially among highly educated men. It is not possible to fully discern from the cross-sectional data why foreign-owned firms tend to pay higher starting salaries. The possible hypothesis is as follows. 1) a barrier to entry for foreign firms, 2) the higher ability of the workers hired by foreign firms, or 3) the higher productivity of foreign firms to be able to pay higher starting salaries. Even after controlling for employee size and education, establishments with a high ratio of foreign capital tend to pay higher starting salaries. It suggests that there are certain barriers to entry into the labor market for foreign-owned firms