If it is calling itself organic and the cow is not grass-fed, I think that would be a fraudulent practice. But the standards for organic dairy are sometimes not that strict. I think the Horizon brand of organic dairy has been brought into question as to how organic it really is.
Naturland appears to allow their cows to graze on pasture.
From that link:
1.2.1 Dairy farming
It is prohibited to keep the dairy cattle tied up permanently. They must be given the opportunity to graze (throughout the grazing season) or to go outdoors the wholeyear. In new or restructured sheds, slatted floors in the walking area must consist of broad slats. Specialattention has to be paid to careful construction. Where slatted floors already exist, missing slats in thewalking area have to be replaced.Where the animals are tied up, their natural lying and standing habits have to be considered. The use ofelectrical aids to condition the cow in its movements is prohibited.Loose housing sheds must provide a feeding and a resting area for every cow. It is permissible to havefeeding areas smaller than would correspond to the number of animals kept, if the feed is constantly ac-cessible.