http://www.brookings.edu/research/opinions/2014/07/29-skills-mismatch-overblown-burtless
So basically employers that are crying about a skills shortage are lying out their ass.
It is cheap for employers to claim qualified workers are in short supply. It is a bit more expensive for them to do something to boost supply. Unless managers have forgotten everything they learned in Econ 101, they should recognize that one way to fill a vacancy is to offer qualified job seekers a compelling reason to take the job. Higher pay, better benefits, and more accommodating work hours are usually good reasons for job applicants to prefer one employment offer over another. When employers are unwilling to offer better compensation to fill their skill needs, it is reasonable to ask how urgently those skills are really needed.
So basically employers that are crying about a skills shortage are lying out their ass.