In general, empirical studies on economics rely on the assumption of constant capitalshare of income both at the aggregate level and at the sector level. However, there is noempirical evidence supporting the constancy of capital share at the sector level. In thispaper, using Colombian data, we...

We consider a model of factor saving innovations and study the effects of exogenous changes in labor supply. In a biased innovations setting, as economies accumulate capital, labor becomes relatively scarce and expensive. As a consequence, incentives for labor saving and capital using...

We formulate and solve a model of factor saving technological improvement considering three factors of production: labor, capital and energy. The productive activities have three main characteristics: …first, in order to use capital goods fi…rms need energy; second, there are two sources of...