Does it Pay to be Flexible

This paper addresses the determinants of price-cost margins inU.S. 4-digit industries. Margins are larger in capital intensive andconcentrated industries with high growth rates and R & D andadvertising to sales ratios. They also fluctuate significantly overthe business cycle. We go beyond the existing literature byconsidering an issue which is a dominant topic in the businessliterature, the flexibility of firms to adjust to exogenous shocks.In particular, we find a significant positive relationship betweenthe flexibility of labour demand and price cost marginssuggesting that it pays to be flexible.