The quasi-linear fuzzy modeling of Filev (1991) is used to estimate the relationship between the number of managers and employees in a firm. The results form the basis for the classification of firms into small and large businesses. Application to a data of Australian firms shows an evolution...

Using the Young Finns Study (YFS) combined with the Finnish Linked Employer-Employee Data (FLEED) we show that quantities of creatine measured in 1980 prior to labour market entry affect labour market outcomes over the period 1990-2010. Those with higher levels of creatine (proxied by urine...