If you had read the entire very short article linked in the post above and then followed the link to their sources, you might have found this:
When comparisons are made controlling for the difference in annual hours worked, full-time state and local government employees are undercompensated by 4.8%, compared with otherwise similar private sector workers.
To summarize, our study shows that Wisconsin public employees earn 4.8% less in total compensation per hour than comparable full-time employees in Wisconsin’s private sector.<SNIP>
The earnings equation estimates indicate that state and local government employees in Wisconsin are not overpaid. Rather, local and state public employees are undercompensated. When we make comparisons controlling for education, experience, hours of work, organizational size, gender, race, ethnicity, citizenship, and disability, both state and local public employees earn lower wages and receive less in compensation (including all benefits) than comparable private sector employees.
The data analysis also reveals substantially different approaches to staffing and compensation between the private and public sectors, reflecting the different occupational categories within each sector. On average, Wisconsin public sector workers are more highly educated than private sector workers; 59% of full-time Wisconsin public sector workers hold at least four-year college degrees compared with 30% of full-time private sector workers. For college-educated labor, Wisconsin state and local governments pay significantly less than private employers. The earnings differential is greatest for professional employees, lawyers, and doctors. These earnings differences may create opportunities for cutting costs by reviewing professional outsourcing contracts to examine what work might be performed by lower-cost public employees. On the other hand, the public sector appears to pay more for less educated workers by setting a floor on compensation, which particularly improves the earnings of workers without high school educations when compared with similarly educated workers in the private sector, where the earnings floor has collapsed (Lee 1999).
Keefe, Jeffrey H. 2011.
"Are Wisconsin Public Employees Overcompensated?", Economic Policy Institute, Washington, D.C., February 10.
There is a lot in that study - well worth the read.
That study is dated February 10, this year, so it is directly applicable to the current situation. And it indicates that Wisconsin citizens are getting a terrific value from their low paid public sector employees. Well educated people are choosing to work for less for the benefit of their state. And how are they getting rewarded - insults, pay cuts and their rights taken away.