Relational Contracts and Inequity Aversion

We study the effects of envy on the feasibility of relational contracts in a standard moral hazard setup with two agents. Performance is evaluated via an observable, but non-contractible signal which reflects the agent´s individual contribution to firm value. Both agents exhibit disadvantageous inequity aversion. In contrast to the literature, we find that inequity aversion may be beneficial: In the presence of envy, for a certain range of interest rates relational contracts may be more profitable. Furthermore, for some interest rates reputational equilibria exist only with inequity averse agents.Principal-Agent, Relational Contract, Inequity Aversion, Envy

Wage Floors and Optimal Job Design

We analyze the effects of lower bounds on wages, e.g., minimum wages or liability limits, on job design within firms. In our model, two tasks contribute to non-verifiable firm value and affect an imperfect performance measure. The tasks can be assigned to either one or two agents. In the absence of a wage floor, it is optimal to assign the tasks to different agents whenever the agents' reservation utility is not too large. Under such a job design, the principal can tailor incentives according to each task's marginal productivity. By contrast, with a relatively large wage floor, the principal gradually lowers effort incentives to avoid rent payments to the agents, even before the wage floor exceeds the agents' reservation utility. If the wage floor is sufficiently large, the principal hires only one agent even though this leads to a distortion of effort across tasks or the non-execution of one task altogether

Wage floors and optimal job design

We analyze the effects of lower bounds on wages, e.g., minimum wages or liability limits, on job design within firms. In our model, two tasks contribute to non-veriable firm value and affect an imperfect performance measure. The tasks can be assigned to either one or two agents. In the absence of a wage floor, it is optimal to assign the tasks to different agents whenever the agents' reservation utility is not too large. Under such a job design, the principal can tailor incentives according to each task's marginal productivity. By contrast, with a relatively large wage floor, the principal gradually lowers effort incentives to avoid rent payments to the agents, even before the wage floor exceeds the agents' reservation utility. If the wage floor is sufficiently large, the principal hires only one agent even though this leads to a distortion of effort across tasks or the non-execution of one task altogether

The Impact of Envy on Relational Employment Contracts

We study the effects of envy on relational employment contracts in a standard moral hazard setup with two agents. Performance is evaluated via an observable, but non-contractible signal which reects an agent's individual contribution to firm value. Both agents exhibit horizontal disadvantageous inequity aversion. In contrast to the literature, we find that inequity aversion may be beneficial; in the presence of envy, for a certain range of interest rates, relational contracts may be more profitable. For some interest rates reputational equilibria exist only with envious agents

Wage Bargaining when Workers Have Fairness Concerns

We analyze optimal labor contracts when the worker is inequity averse towards the employer. Welfare is maximized for an equal sharing rule of surplus between the worker and the firm. That is, profit sharing is optimal even if effort is contractible. If the firm can make a take-it-or leave-it offer, the optimal contract is also state-dependent but always suboptimal with respect to welfare. The reason is that the firm will always pay the worker less than half of the surplus, thereby leading to agency costs due inequity aversion. If the parties bargain over the optimal contract, the optimal division of surplus is more equitable compared to the case with a purely selfish worker. Moreover, the optimal contract with bargaining approaches the welfare-optimal contract as the parties' bargaining power converges. Our results help explain why workers are willing to accept lower wages in times of crisis but demand higher wages in times of economic rise. Moreover, our findings imply that raising the bargaining power of the less powerful party may increase welfar

Social Relations and Relational Incentives

This paper studies how social relationships between managers and employees affect relational incentive contracts. To this end we develop a simple dynamic principal-agent model where both players may have feelings of altruism or spite toward each other. The contract may contain two types of incentives for the agent to work hard: a bonus and a threat of dismissal. We find that good social relationships undermine the credibility of a threat of dismissal but strengthen the credibility of a bonus. Among others, these two mechanisms imply that better social relationships sometimes lead to higher bonuses, while worse social relationships may increase productivity and players' utility in equilibrium

The impact of inequity aversion on relational incentive contracts

Diese Dissertation enthält drei Aufsätze zur Theorie der Anreizsetzung bei nicht-verifizierbaren Leistungsmaßen. Untersuchungsgegenstand sind die Auswirkungen individueller Fairnesspräferenzen auf die Ausgestaltung und Eignung verschiedener Anreizmechanismen, welche in realen wirtschaftlichen Situationen Anwendung finden. Alle Arbeiten analysieren Umgebungen moralischen Risikos, in denen eine Firma zwei ungerechtigkeitsaverse Mitarbeiter beschäftigt, deren individuelle Arbeitsleistung zwar beobachtbar, jedoch nicht kontrahierbar ist. Der erste Aufsatz untersucht die Effekte von Ungerechtigkeitsaversion auf relationale Anreizverträge. Als Leistungsmaß eines Agenten dient sein individueller Beitrag zum Firmenwert. Abweichend von der Literatur zeigt sich, dass Ungerechtigkeitsaversion vorteilhaft sein kann: Für bestimmte Zinssätze können relationale Verträge mit neidischen Agenten profitabler sein, wenn sie nicht sogar nur mit solchen implementierbar sind. Der zweite Aufsatz vergleicht relationale Individual- und Gruppenbonusverträge. Durch das Vermeiden ungleicher Löhne sind letztere profitabler, solange sich die Firma keinem Glaubwürdigkeitsproblem gegenübersieht. Dies kann sich jedoch umkehren, da Individualboni vergleichsweise kleiner sind und somit die Selbstdurchsetzung des Vertrags fördern. Ursachen dafür sind das Vermeiden des Trittbrettfahrerproblems und die Anreizwirkung von Neid. Im dritten Aufsatz wird relationalen Individualbonusverträgen ein relatives Leistungsturnier gegenübergestellt. Im Gegensatz zum Bonusvertrag unterliegt das Turnier keiner Glaubwürdigkeitsbeschränkung. Dennoch ist ersteres Anreizschema profitabler, solange das Glaubwürdigkeitsproblem der Firma nicht zu groß ist. Dies liegt an der zwingenden Auszahlung ungleicher Löhne im Turnier und den daraus resultierenden hohen Kosten für Ungleichheitsprämien. Weiter wird für ein Beispiel gezeigt, dass die Zinsspanne, für die der Bonusvertrag das Turnier dominiert, im Neid der Agenten steigt.This thesis consists of three self-contained essays that investigate the impact of fairness concerns among agents on the design of real-world incentive contracts used to mitigate moral-hazard problems under non-verifiable performance. All papers consider situations in which a firm employs two inequity averse workers whose individual performances are, albeit observable by the contracting parties, not contractible. The first paper studies the effects of inequity aversion on relational employment contracts. Performance is evaluated via an agent’s individual non-verifiable contribution to firm value. In contrast to the literature, we find that inequity aversion may be beneficial: In the presence of envy, for a certain range of interest rates relational contracts may be more profitable. For some interest rates reputational equilibria exist only with envious agents. In the second paper, I compare group to individual performance pay. Avoiding payoff inequity, the group bonus contract is superior as long as the firm faces no credibility problem. The individual bonus contract may, however, become superior due to two reasons: The group bonus scheme is subject to a free-rider problem requiring a higher incentive pay and impeding credibility of the firm. Moreover, with individual bonuses the firm benefits from the incentive-strengthening effect of envy, further softening the credibility constraint. The third paper contrasts a rank-order tournament with independent bonus contracts. Whereas the bonus scheme must be self-enforcing, the tournament is contractible. Yet the former incentive regime outperforms the latter as long as credibility problems are not too severe. This is due the fact that the tournament requires unequal pay across peers with certainty and thus imposes large inequity premium costs on the firm. For a simple example, I show that the more envious the agents are the larger is the range of interest rates for which the bonus scheme dominates the tournament