Nicholas Bagley, Robert Gordon:

The left has two competing impulses: Expand high-quality government services and embrace the public sector union agenda.
But those two impulses are in tension with one another — and too many Democrats are in denial about that. At its core, the problem is that public sector unions generally fight to minimize differences among employees, including both standouts at the top and weak links at the bottom.
That means governments cannot recruit and retain the best workers or manage up or out the worst performers. That, in turn, badly degrades the quality of government service in ways that damage the Democrats’ own cause.
In California, for example — as Zach Liscow at Yale Law School and two coauthors recently showed — higher-quality engineers saved the state a ton of money on transportation projects. When these engineers retired, project costs rose by six times their wages.
And no wonder those excellent engineers retired. Good engineers can earn much more in the private sector. The same is true for excellent technologists, who can savegovernments millions on vendors but are often paid far below average market levels. Higher pay for effective teachers has likewise been a part of performance gains for schools in the District of Columbia and Dallas.
But labor serves to compress pay across jobs and reject salary differences based on performance altogether. Excessive job protection for poor performers has an even greater effect on government results.
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WEAC: $1.57 million for Four Wisconsin Senators
Related: Act 10.
More on the taxpayer funded Wisconsin DPI and educator sexual misconduct.