The task of this study was to calculate the direct and indirect economic impact of the Essen trade fairs with the help of input-output tables.
By using input-output tables, the direct and indirect production and income effects as well as the resulting tax revenue of the various authorities (City of Essen, North Rhine-Westphalia and Germany) were estimated. For calculating the direct and indirect effects, an estimation model was developed that was primarily based on the features of the visitors and exhibitors and individual expenditures (e.g. accommodation, stand construction).
Based on surveys conducted during the project among visitors and exhibitors and selected Essen trade fairs, the total volume of visitors and exhibitors for the trade fair year 2008 was determined.
Penzkofer, Horst, "Messen und Veranstaltungen der Messe Essen führten 2008 zu einer Beschäftigung von knapp 7.500 Personen", ifo Schnelldienst 62 (17), 2009, 34-37. (Abstract / Download, in German)