Google Engineers, 20% of Working Time for Self-initiated Projects.

Abstract: Google engineers are encouraged to take 20 percent of their time to work on something company-related that interests them personally. This means that „if you have a great idea, you always have time to run with it.”
Driver
Social
Growing need to stimulate sense of auto-achievement and creativity on working spaces
Economic / Industrial
Related to similar tentatives to stimulate innovation in all departments of the company. This is actually empowering talented people, in order to bring their own best ideas to test and sometimes turn them into reality.
Design / Art
Current tendency to look for talented people outside innovation sectors. Design and creativity where you are not excepting them.
Obstacle
Social
The chance that engineers feel like “the company owns me” exists.
Economic / Industrial
What about the intellectual property of these “un-official projects”?
Indication
Change in current innovation patterns
Innovation may come from employees of a company; in this case, it’s strongly institutionalized by the company itself.
Sector specifics / cultural specifics
This weak signal is specific to any company with a high number of employees.
Source
Internet
www.nytimes.com/2007/10/21/jobs/21pre.html