Although studies consider different types of jobs, nearly all adopt a common language of “direct”, “indirect” and "induced” jobs. The International Renewable Energy Agency (IRENA) provides not only a clear and operational definition of these terms, but also elaborates appropriately on the slight but important variations in their interpretation across studies (IRENA, 2011). Precise definitions vary, but in general these are jobs related to core activities, such as manufacturing/fabrication, construction, site development, installation, and operation and maintenance (O&M).