Acknowledging that changes in factor utilization rates explain variations in factor productive services flows, this paper investigates a dynamic general equilibrium model incorporating quasi-fixed inputs, weak complementarity between capital and labour, and displaying variations in the following three margins: (i) individual hours, (ii) aggregate employment and (iii) the workweek of capital. Both instantaneous amplification of shocks and mid-term persistence are substantially magnified, witnessing much richer propagation mechanisms. This high persistence does not entirely rely on assumptions regarding adjustment of employment, but, on the contrary, on faster capital accumulation enabled by large increases in output due to periods of high factor utilization.