Documents Université Paris Ouest Nanterre La Défense 8 results

"Some recent empirical contributions have pointed out a significant negative impact of pollution on labor supply. These impacts have been largely ignored in the theoretical literature, which, instead, focused on the case of pollution effects on consumption demand. In this paper, we study the short and long-run effects of pollution in a Ramsey model where pollution and labor supply are nonseparable arguments in households' preferences. We determine sufficient conditions for existence and uniqueness of a longterm equilibrium and we show how large (negative) effects of pollution on labor supply may promotes macroeconomic volatility (deterministic cycles near the steady state) through a flip bifurcation."

"The global financial crisis has pinpointed the relevance and the virulence of systemic risk in modern innovative finance. It is grounded in the propensity of credit markets to drift to extremes in close correlation with asset price spikes and slumps. In turn, such a propensity is nurtured by the heuristic behaviour of market participants under severe uncertainty. While plagued by disaster myopia, market participants spread systemic risk. Such adverse conditions have been magnified by financial innovations that have made finance predatory and capable of capturing regulators to annihilate prudential policies. Malfunctioning in finance is so deep and disorders are so widespread that sweeping reforms are the order of the day, if financial stability is viewed as a primary public concern. In this paper we argue that macro prudential policy should be the linchpin of relevant reforms. Being a top-down approach, it impinges both upon monetary policy and micro prudential policy. ..."

"A standard specification of the WS-PS model based on wage bargaining between unions and firms makes it possible to understand the main features of long-term dynamics of unemployment and wages in France at the macroeconomic level. This result is conditional on auxiliary hypotheses made on the representations of the degree of rigidity in the labour market (depicted by a stochastic state variable), of the reservation wage (depending on the legal minimum wage), and on the nature of “other factors” pertaining to wages and prices that are not a priori specified in the WS-PS theoretical framework (summarized by the output gap). We find that the observed unemployment adjusts gradually to its equilibrium value, which is composed of three components: a “chronic” component due to the repartition in the added-value (real reservation wage, social contributions, productivity, profit margins of companies), a “cyclical” component depending on the output gap, and a “frictional” component due to the imperfect mobility of labour and technical progress. The observed wage also adjusts gradually to its negotiated value, the latter depending on the reservation wage, the social contributions, the price level, the labor productivity, the profit margins of companies, the unionization rate and on the unemployment rate whose influence is time-varying. Our results suggest that, in the average, the power of firms dominates that of unions during the negotiations, while, as predicted by the theory, change in employment intervenes effectively in the adjustment between wage desired by employees and wage offered by employers to achieve equilibrium."