In this paper I am investigating the relationship between player effort and the number of years since signing a new contract in the English Premier League. Tackles and aerial duels were used as measures of effort because they tend to be considered actions that carry a higher risk of injury, which players will engage in less often when comfortable with their contract. I compared a player’s number of tackles or aerial duels per appearance in a season to their average across a five-year period. 92 players were considered in the sample and five years of data was collected for each player. The seasons collected for each player are the season prior to signing a new contract, the season in which a new contract began, and the three seasons post new contract signing. The results show that when using tackles as a measure of effort, player effort levels drop every season following a new contract signing.