Game Theoretic Models of Wage Bargaining

This paper aims at being a tool to help apply game theoretic bargaining models to wage negotiations. In this perspective, we review a number of articles which explicitly deal with wage determination as well as purely game theoretical models which we believe can be fruitfully extended to account for specific features of labour markets. We discuss some common shortcomings in the wage negotiation literature, and suggest possible lines of research worth pursuing to deal with such weaknesses.     

Distributional Effects of Price Reforms in the Italian Utility Markets*

In this paper, we analyse some distributional effects of the reforms to water and energy services in Italy. We first document the new regulation setting in these services, illustrating the dynamics of utility prices and of household expenditure in the period 1998‐2005. We then propose a way to measure the affordability of public utilities, in order to investigate how many households would incur a potentially excessive burden if they consumed a minimum quantity of utility services. Finally, we calculate this index on data from the Survey on Family Budgets (Indagine sui consumi delle famiglie). Our results show how the affordability of utility bills varies from region to region depending on climate, income, family endowment and family size. The analysis ‐ also based on a counterfactual exercise ‐ finds that so far, utility reforms do not seem to have produced any negative effects on weaker households.     

The Effects of Banking Mergers on Loan Contracts

This paper studies the effects of banking mergers on individual business borrowers. Using information on individual loan contracts between banks and companies, I analyze the effect of banking consolidation on banks' credit policies. I find that in-market mergers benefit borrowers if these mergers involve the acquisition of banks with small market shares. Interest rates charged by the consolidated banks decrease, but as the local market share of the acquired bank increases, the efficiency effect is offset by market power. Mergers have different distributional effects across borrowers. When banks become larger, they reduce the supply of loans to small borrowers.     

Aging and Retirement: Evidence Across Countries

How do demographic factors influence retirement? Using a large cross-country data set, I show that in countries with a larger share of elderly in their population the length of retirement is longer. This result holds true if I control for wealth effects, and when the effective labor force participation rate of the elderly is used instead of the official retirement age. Retirement policies and the social security size are strictly related: a new variable, representing the aggregate relevance of retirement policies, turns out to be significant in explaining the size of social security. Finally, the total amount of social security transfers is positively related with the increase of the elderly population, while in per capita terms this relation is not significant.     

A "Tragedy of the Clubs": Excess Entry in Exclusive Coalitions

We model club formation as a noncooperative game of coalition formation and surplus division. We show how social norms and individual rationality sustain a particular type of collective inefficiency, namely, excessive entry in the joint production and exploitation of an excludable good. We term this phenomenon the "tragedy of the clubs." The tragedy of the clubs is a pervasive equilibrium phenomenon.     

The influence of ownership on the cost of bus service provision in Switzerland - an empirical illustration

In deregulated transport markets, a firm's ownership status and management system represent an important issue. Property right theory suggests that productivity and performance are higher in the private than in the public sector. In Switzerland, providers of bus transportation are traditionally corporations, though a large part of their equity shares are still held by the public sector (federal government, cantons, municipalities). This paper examines the potential impact of ownership on the cost of bus service provision for a sample of private, public and mixed bus companies in Switzerland. The estimation of a translog cost model has been considered for 34 bus transit companies observed over 5 years (1991–1995). The results only partially confirm that if the private sector holds shares in the company's capital, efficiency is enhanced. In addition, measures of economies of scale and density are derived and discussed within the actual public transport policy.     

Circular business model evolution: Stakeholder matters for a self-sufficient ecosystem

Food waste is a key issue in the circular economy. A circular ecosystem results from the contributions of various stakeholders; however, the claims and value propositions of these stakeholders can differ, hampering long-term sustainability of the ecosystem. This study analyses the case of RiCibo, a circular ecosystem based in Genoa, Italy. RiCibo collects surplus food and redistributes it to the needy in the local community. The study examines the conditions that facilitated RiCibo’s evolution from a simple project to a circular self-sufficient ecosystem characterised by a co-designed circular business model with a broad range of stakeholders. The results show that sharing people, infrastructure and knowledge, together with mutual trust among stakeholders, are the preconditions of a circular ecosystem. Long-term continuity depends on additional tools that enhance financial self-sufficiency, namely, participative governance, a co-designed circular business model, accountability, frequent engagement, local actions and the development of advocacy power.