A new study on the impact of an emerging global “green economy” on the world of work says efforts to tackle climate change could result in the creation of millions of new “green jobs” in the coming decades, according to a press statement by the International Labour Organization.

The report was funded and commissioned by the UN Environment Programme (UNEP) under a joint Green Jobs Initiative with the International Labour Office (ILO), and the International Trade Union Confederation (ITUC) and the International Organization of Employers (IOE), which together represent millions of workers and employers worldwide. It was produced by the Worldwatch Institute, with technical assistance from the Cornell University Global Labour Institute.

The new report, ”Green Jobs: Towards Decent work in a Sustainable, Low-Carbon World,” says changing patterns of employment and investment resulting from efforts to reduce climate change and its effects are already generating new jobs in many sectors and economies, and could create millions more in both developed and developing countries, according to the ILO statement.

But the report also finds that the process of climate change, already underway, will continue to have negative effects on workers and their families, especially those whose livelihoods depend on agriculture and tourism, according to the ILO.

Green jobs reduce the environmental impact of enterprises and economic sectors, ultimately to levels that are sustainable. The report focuses on “green jobs” in agriculture, industry, services and administration that contribute to preserving or restoring the quality of the environment, according to the ILO.

Among the report’s key findings:

The global market for environmental products and services is projected to double from U.S. $1,370 billion per year at present to U.S. $2,740 billion by 2020, according to a study cited in the report.

Half of this market is in energy efficiency and the balance in sustainable transport, water supply, sanitation and waste management. In Germany for example, environmental technology is to grow fourfold to 16 percent of industrial output by 2030, with employment in this sector surpassing that in the country’s big machine tool and automotive industries.

Sectors that will be particularly important in terms of their environmental, economic and employment impact are energy supply, in particular renewable energy, buildings and construction, transportation, basic industries, agriculture and forestry.

Clean technologies are already the third largest sector for venture capital after information and biotechnology in the United States, while green venture capital in China more than doubled to 19 per cent of total investment in recent years.

2.3 million people have in recent years found new jobs in the renewable energy sector alone, and the potential for job growth in the sector is huge, according to the ILO.

A worldwide transition to energy-efficient buildings would create millions of jobs, as well as “greening” existing employment for many of the estimated 111 million people already working in the construction sector.

Investments in improved energy efficiency in buildings could generate an additional 2-3.5 million green jobs in Europe and the United States alone, with the potential much higher in developing countries.

Recycling and waste management employs an estimated 10 million in China and 500,000 in Brazil today. This sector is expected to grow rapidly in many countries in the face of escalating commodity prices.

The report provides examples of massive green jobs creation, throughout the world, such as: 600,000 people in China who are already employed in solar thermal making and installing products such as solar water heaters; in Nigeria, a bio fuels industry based on cassava and sugar cane crops might sustain an industry employing 200,000 people; India could generate 900,000 jobs by 2025 in biomass gasification of which 300,000 would be in the manufacturing of stoves and 600,000 in areas such as processing into briquettes and pellets and the fuel supply chain; and in South Africa, 25,000 previously unemployed people are now employed in conservation as part of the ‘Working for Water’ initiative.

The report finds that green markets have thrived and transformation has advanced most where there has been strong and consistent political support at the highest level, including targets, penalties and incentives such as feed-in laws and efficiency standards for buildings and appliances as well as proactive research and development. The report says that delivery of a deep and decisive new climate agreement when countries meet for the crucial UN climate convention meeting in Copenhagen in late 2009 will be vital for accelerating green job growth.