In the short term, a lock-in effect for those who enter training might approximately cancel out a positive impact for those who do not enter training. Job brokerage is easier during an economic expansion, when there are relatively more vacancies per unemployed job seeker. But it is also possible during recessions, since a considerable number of job vacancies continue to be opened by employers even when business conditions are generally bad. Other countries claim even higher market shares of up to 60%.