I have known plenty of white collar contractors be converted to full-time. Note that this isn't a promotion technically, but rather, a change of employer. The

I have known plenty of white collar contractors be converted to full-time. Note that this isn't a promotion technically, but rather, a change of employer. They're going from being employed by a staffing firm to being employed directly by Google. Also note that a lot of the white collar contractors are only 'temporary' at Google itself; they are full-time employees of their staffing firm, and if their gig is up at Google then they'll go on to the next client. They do tend to get benefits like health insurance and retirement accounts, albeit not as good as the ones offered directly by Google. Also note that this path is only available for white collar workers. There aren't any full-time positions available for janitors, cafe workers, security guards, etc., as big companies tend not to employ those positions directly as it's outside their wheelhouse.