There are surprisingly few studies to date to demonstrate the positive effect of eco-labelling to reduce environmental damage (Hes, 2000), and other studies suggest only a moderate effect of labelling so far in changing consumer behaviour. Nevertheless it seems clear that eco-labelling has great potential as environmental consciousness grows. It has been shown that such labels do increase product sales, and increasing numbers of companies feel it worth the trouble and expense of certification. Furthermore there are indications that government approval for, and encouragement of, eco-labelling has had a noticeable effect on market behaviour. This impact is more than noticeable when government is also actively involved in green procurementthat is, buying green products for its own use. Governments are large enough to constitute substantial markets in themselves. The problem is that, outside Europe and the Nordic countries, pro-active government support and procurement has been very limited.