Dog tillades der et valg af referenceperiode for hver enkelt ar bejdstager i prøven, og mens betalte fridage således er inkluderet i de rapporterede timer, ville de fleste rapporter i virkeligheden stå i for bindelse med ugers faktisk arbejde.
However a choice of reference period is allowed for each employoe in the sample, and thus while paid holidays are included in the hours reported, most reports would in fact relate to weeks of actual work.