Studies for the UK suggest that the more than 100,000 existing 'green collar' workers in environmental occupations could be joined by many thousands more, both in the private sector and in the 'social economy' of community enterprises.
Qualification structure of the workforce (%)19801997 Blue-collar29.733.5 Green-collar21.210.0 White-collar25.031.7 Grey-collar24.024.8.