Is Gibrat's law valid for travel agencies and tour operators? Evidence from the Visegrad group countries

The purpose of this paper is to investigate the validity of Gibrat's law for a sample of travel agents from the Visegrad group (V4) countries and to identify the size-growth relationship. Using a linear auto-regressive model and ordinary least squares estimator, we rejected the validity of Gibrat's law in the V4 countries (except Poland, where the results were mixed). The smallest firms tend to grow faster than their larger counterparts. Using quantile regression models, we concluded that the size-growth link differed depending on actual firm size. Before reaching minimum efficient scale (MES), there is a positive relationship between firm growth and firm size. This relationship is negative after reaching MES: the smaller firms grow faster than bigger ones. Gibrat's law tends to be valid in the population of firms that have reached MES. This shows that economies and diseconomies of scale could play a significant role in explaining the size-growth relationship of travel agents.