A Model Specification Test For GARCH(1,1) Processes

We provide a consistent specification test for generalized autoregressive conditional heteroscedastic (GARCH (1,1)) models based on a test statistic of Cramér‐von Mises type. Because the limit distribution of the test statistic under the null hypothesis depends on unknown quantities in a complicated manner, we propose a model‐based (semiparametric) bootstrap method to approximate critical values of the test and to verify its asymptotic validity. Finally, we illuminate the finite sample behaviour of the test by some simulations.     

Productivity,Real Wages and Worker Rights: A Cross-National Comparison

ABSTRACT: High unemployment in Europe has led many economists to recommend labour market deregulation — the removal of obstacles to labour market flexibility. These “obstacles” include union power, employment protection legislation and income security arrangements. We argue that such worker rights promote productivity and real wage growse effects. Policy-makers should be aware of these positive effects on productivity and real wage growth when considering curtailing worker rights in order to reduce unemployment.