Firm-specific human capital in different market conditions: Evidence from the Japanese football league

This paper examined how and the extent to which obtaining skills to meet team specific human capital is important to improve football player's performance by comparing the top league and the second league. Based on panel data of individual players during the 2012-2016 seasons of the Japan Professional Football League (J League), we found; (1) In the top-league, changing team reduced player's performance and their performance improved as player's tenure of the team and also tenure of J League increased. (2) returns from acquiring team specific skills on time of play in the game increase and then decrease as years have passed. (3) benefit from moving team depends on the timing of moving, and so rookie players can benefit from moving when team tenure reach 4 years or more. (4) In the second league, neither team tenure nor experience of the professional football player does not influence player's performance.