About.com (reference below) defines extensive margin as the range to which a resource is utilized or applied, such as the hours worked by an employee. This is contrasted with Intensive Margin.
Atlas topic, subject, and course
About.com Economics, Extensive Margin, at http://economics.about.com/library/glossary/bldef-extensive-margin.htm, accessed 18 May 2016.
Page created by: Ian Clark, last modified 18 May 2016.