I use data from the National Football League (NFL) to analyze the impact of minimum salaries on an employee’s firm tenure, an employee’s career length, and an employer’s distribution of employee experience. The NFL has a salary structure in which the minimum salary a player can receive increases with the player’s years of experience. Salary schedules similar to the NFL’s exist in public education, Secret Service, Internal Revenue Service, other federal government agencies, the Episcopalian church, and unionized industries. Even though the magnitude of the salaries in the NFL differs from other industries, this study provides insight to the impact of this type of salary structure firm tenure, career length, and the experience distribution. In the first essay, I analyze the impact of minimum salaries on firm tenure and career length for six positional groups in the NFL, defensive backs, defensive linemen, linebackers, running backs, tight ends, and wide receivers. A major advantage of using NFL data is that I am able to control for a player’s productivity. I find statistically significant evidence that minimum salaries shorten firm tenure and career length when they require teams to increase a player’s base salary from year t to year t+1 or a player’s total compensation from year t to year t+1. In the second essay, I analyze the impact of minimum salaries on the experience distribution. I exploit the fact that the NFL’s minimum salary schedule causes the relative minimum price between two experience levels to change over time. This provides teams with an incentive to substitute away from the experience level whose relative minimum price becomes more expensive. I find evidence that when relative minimum prices change, the experience distribution changes.

Objectifs: L’objectif principal de ce mémoire consiste à comprendre les caractéristiques des carrières criminelles d’individus connus de la police pour avoir perpétré une infraction de leurre d’enfants sur Internet. Aussi, par une analyse typologique à l’aide des antécédents criminels, il sera possible d’établir une typologie d’individus ayant leurré des enfants sur Internet. Également, il sera question de vérifier s’il y a un lien entre les caractéristiques des antécédents criminels de ces individus sur la perpétration de l’agression sexuelle hors ligne. Méthodologie: Provenant de données officielles de la communauté policière du Québec, l’échantillon comprend les parcours de criminels ayant perpétré une infraction de leurre d’enfants sur Internet. Des analyses descriptives en lien avec les différents paramètres de la carrière criminelle seront effectuées. Ensuite, des tests de moyenne et une analyse de régression Cox permettront de vérifier la présence ou non d’un lien statistique entre les caractéristiques des antécédents criminels des individus connus de la police pour leurre d’enfants sur Internet et le passage à l’acte physique. Résultats: Les analyses ont montré que la majorité des sujets n’avaient aucun antécédent judiciaire. Pour la plupart, le leurre d’enfants est le crime le plus grave perpétré au cours de leur carrière criminelle. Trois catégories d’individus ont été décelées : les amateurs, les spécialistes et les généralistes. Ce sont les individus polymorphes ayant une carrière criminelle plus grave et plus longue qui sont portés à agresser sexuellement avant le leurre. Cependant, ce sont des individus spécialisés ayant une importante proportion de délits sexuels dans leurs antécédents criminels qui ont plus de chance d’agresser sexuellement suite à l’exploitation sexuelle sur Internet. / Objectives: The aim of this paper is to understand the criminal career characteristics of people who are known from the police to have committed child luring on the Internet. Using a taxonomic analysis created with the criminal history of these individuals, it will be possible to establish a typology of people who have lured children online. Ultimately, the variance in characteristics of the criminal background on the commission of offline sexual abuse will also be verified. Methodology: Drawing from official data of Quebec’s police community, the sample includes criminal careers of people having committed the offense of luring children over the Internet. Some descriptive analyses related to the different parameters of the criminal history will be included. Moreover, a mean test and a Cox regression analysis will verify the significance and the predictability of acting out prior and after the act of luring children online based on criminal background. Results: Analyses have shown that the majority of subjects have no criminal record. For many of them, children luring is the most serious crime committed in their criminal career. Three categories of individuals have been identified: amateurs, specialists and generalists. Those who are tempted to commit sexual abuse before luring are the polymorphic subjects with a more serious criminal history. However, those who are considered specialists with a significant proportion of sexual offenses in their career are more likely to commit sexual assault following sexual exploitation on Internet.