# Nobel Laureate Prof. Michael Spence's research on US job creation is cited

1 December 20, 2011 The Economist >

Excerpt from [The Economist](http://www.economist.com/blogs/freeexchange/2011/12/economic-geography) -- "If we go back and look at the paper by Michael Spence and Sandile Hlatshwayo on net job creation, we see that while non-tradable sectors have been responsible for nearly all of the economy's employment growth since 1990, the tradable sector has generated the bulk of the economy's increase in value added."

[Read more](http://www.economist.com/blogs/freeexchange/2011/12/economic-geography)