The reasons for this increase in the number of labourers have not been thoroughly studied. Fluctuations in catches and catch composition can play a role in explaining this increase. There has been a slight increase in the number of part-time workers in Iceland since 2008, but data on how much of that increase is in the fishing industry are not readily available. The government has introduced various measures to work against the migration from the countryside to the capital area. The fisheries management system has partly been used to that effect.