in this research, the attempt was made to test the existence of the natural rate hypothesis in iran, by using a johansson cointegration test. the results do not reveal any long run relationship between inflation and unemployment in iran for 1340-1386 periods. because of the time varying nature of nairu, the hp filter was applied to estimate the time series of nairu. comparing the nairu time ser...

The present paper thoroughly explores second-best efficient allocations in an adverse selection insurance economy. We start from a natural extension of the classical model, assuming less than perfect risk perceptions. We propose first and second welfare theorems, by means of which we describe efficiencyenhancing policies. Notions of weak and strong adverse selection are promising for interpreti...

We study supply and demand shocks in a disaggregated model with multiple sectors, factors, input-output linkages, downward nominal wage rigidities, credit-constraints, zero lower bound. use the to understand how COVID-19 crisis, an omnibus shock, affects output, unemployment, inflation, leads coexistence of tight slack labor markets. show that negative sectoral are stagflationary, whereas defla...

We study the effects of firm’s credit condition on (1) labor market performance and (2) the inflation and unemployment relationship, in a new monetarist model. Better credit condition has positive impact on labor market as firms save on financing cost, improve profitability, and thus create more vacancies. Inflation increases the financing cost and thus discourages job creation. On the other ha...

The productivity-driven Mortensen-Pissarides model predicts that labor productivity, defined as the ratio of output to employment, is strongly correlated with employment, unemployment, vacancies and wages whereas these correlations were argued to be much weaker in the data, especially since the mid 1980s. We first document that the size of these discrepancies between the data and the model beco...