I just don't want to let the assertion go about the gap between private sector and public service salaries. The CFIB study has I think been generally discredited because it lumps together all occupations. It doesn't control for educational attainment; it simply compares groups of occupations and doesn't distinguish between professional, highly educated knowledge workers in the private and public sectors and the unskilled and semi-skilled.
In fact, studies that differentiate those occupations in the United States show that there is in fact a public service “hit”—that is, for professionals working in the public service. They tend to be paid less, because of all the bonuses and extra packages that exist in the private sector.