You can find highly successful and famous case studies on Recruiting Employees Using LinkedIn from the following link http://talent.linkedin.com/success-toolkit/Case-Study. Since it is already compiled and thoroughly done by LinkedIn itself, it might not serve the purpose of our research. So I tried to find different cases from different sources. But the above link will also provide valuable insights on Recruiting Employees Using LinkedIn.
Recruiting Employees Using LinkedIn – Example 1
Company Name : Schawk
About the Company : Schawk, Inc. is a leading global provider of integrated brand development and brand deployment services
Tools Used : LinkedIn Recruiter, LinkedIn Group, Created a career page on LinkedIn
End Result : Created a strong online presence, helped to create a talent pool for present and future requirements
Savings : $200K (which would have spent on searches)