45 Thus, the effectiveness of monitoring arrangements which, like those introduced in this case, are aimed at checking the family circumstances of the unemployed person concerned and the possible existence of sources of revenue which the claimant has not declared is dependent to a large extent on the fact that the monitoring is unexpected and carried out on the spot, since the competent services have to be able to check whether the information provided by the unemployed person corresponds to the true situation.
45 Učinkovitost nadzornih mehanizmov, katerih cilj je - tako kot teh, vzpostavljenih v obravnavani zadevi - preveriti družinski položaj zadevne brezposelne osebe in morebitni obstoj virov prihodkov, ki jih zadevna oseba ni navedla, je tako precej odvisna od njihove nepričakovanosti in možnosti, da se nadzor lahko izvede na kraju samem, saj morajo imeti pristojne službe možnost, da preverijo skladnost med podatki, ki jih je podala brezposelna oseba, in tistimi, ki izhajajo iz resničnosti dejstev.