Since 2002 European Educational Institute NGO provided language education for several different companies from which the most important ones are:
Accenture,
IBM Slovakia,
RUUKKI Ltd.,
TEBODIN Slovakia Ltd.
Provident Financial, Ltd.,
Handy Media Ltd.,
Betamont Ltd., Zvolen,
NO-HYPO BANK Slovakia,
ČSOB,
IVAX Pharmaceuticals Bratislava,
Van Aarsen Machinefabriek Nitra,
Sky EUROPE Airlines,
Želsys Inc.,
National Bank of Slovakia
Moreover EEI NPO participates in education of public and state sector:
The Central Controlling and Testing Institute in Agriculture (UKSUP),
Slovak Land Resources,
Ministry of the environment SR,
Ministry of Foreign affairs SR.