When we prepared the report on Senior Citizens Working in Spanish Companies (Madrid 2018), some data was included to compare our situation with that of other European countries. The comparison of the active and employed population aged 55 and over in Spain yielded unfavorable balances in relation to other EU territories, especially with the countries of the north and some of the central-west. This led us to propose a second report on Senior Citizens Working in European Companies whose objective is to find out what is being done in other countries with respect to this segment of the working population. Translated by Quicksilver Translate, S.L.