Procedures for estimating a linear single-equation model by means of panel data with errors-in-variables are considered. To eliminate fixed individual heterogeneity, the equation is differenced across one or more than one periods. The differenced equations can be estimated by using as...

Using panel data for the Norwegian manufacturing, we revisit " the increasing returns to scale puzzle" for labour input. We consider the response of the input of white collar workers, blue collar workers, and blue collar worker hours to permanent changes in output. Permanent and temporary...