<a href="http:&#x2F;&#x2F;money.howstuffworks.com&#x2F;second-career-ideas&#x2F;10-reasons-to-change-jobs.htm#page=1" rel="nofollow">http:&#x2F;&#x2F;money.howstuffworks.com&#x2F;second-career-ideas&#x2F;10-reason...</a><p><a href="http:&#x2F;&#x2F;www.forbes.com&#x2F;sites&#x2F;jacquelynsmith&#x2F;2013&#x2F;03&#x2F;08&#x2F;the-pros-and-cons-of-job-hopping&#x2F;2&#x2F;" rel="nofollow">http:&#x2F;&#x2F;www.forbes.com&#x2F;sites&#x2F;jacquelynsmith&#x2F;2013&#x2F;03&#x2F;08&#x2F;the-pr...</a><p>I think this is the actual study?<p><a href="http:&#x2F;&#x2F;www.nerisearch.com&#x2F;neri-newsletter-career-development-june-6-changing-jobs.html" rel="nofollow">http:&#x2F;&#x2F;www.nerisearch.com&#x2F;neri-newsletter-career-development...</a><p>Basically, a skilled employee gets the most out of a job in the first 3 years. And the new company gets the most out of the employee in the first 3 years (or so). After that, in order to restart the learning experience for both parties, a &quot;change of venue&quot; is necessary.