What are the perks of being a tenured professor at U.S. universities, besides having academic freedom?

Universities offer all sort of "benefits" to its employees. Some of these "benefits" do not have a monetary value (e.g., flexible work schedule). The benefits available to faculty are often different from the cleaning staff. Further there are differences in benefits between tenured/tenure track and adjunct faculty. I can only think of three benefits, that have a monetary value, for which there are differences between tenure track and tenured faculty

Sabbatical: Some universities do not permit pretenure sabbaticals. It is often hard to differentiate if sabbatical eligibility is tied to tenure or time in service. Brown University provides different sabbatical benefits pre and post tenure.

Housing Assistance: Some universities provide housing assistance (discounted homes, mortgage assistance, loans, etc). Portions of the housing assistance program at Columbia requires tenure.

Parking: Some universities provide parking passes. Carroll College provides reserved spaces for tenured faculty while other faculty and staff simply get a parking pass.

In terms of perks that do not have a monetary value, this varies widely by department. Tenured faculty often get to be chair of the department (which may or may not be a perk). Departments may also give tenured faculty priority in terms of teaching schedule, departmental and university service requirements, office space, and lab space. The sabbatical system, internal funding, and administrative support may be skewed in their favor also.

While some universities offer tuition waivers, that is not universal, even in the United States -- and where it is available, it is usually a perk offered to all full time staff and faculty, not just tenured faculty.

For example, I have been employed at three public, research-intensive universities in Michigan:

• At Oakland University, children of all full-time staff or faculty get full tuition if they are admitted to, and enrolled full-time in, any degree-granting program.
• At Michigan State University, children of all full-time staff or faculty get a 50% tuition courtesy if they are admitted to, and enrolled full-time, a first undergraduate program. (In other words they cannot use this to get a discount on a second Bachelors degree or a graduate degree.)
• At the University of Michigan, there is no tuition benefit at all.

Other perks that full-time staff and instructional faculty may get (depending on the university and department) include a computer, office space, retirement (often including a 2-to-1 match in a tax-deferred 403(b) retirement fund up to some maximum), and a generous health care package. But again, these same perks are (often) not restricted to tenured faculty.

My father is a retired college professor, and these were some of his "perks."

1) Tuition reimbursement for all his children, up to that of the university[s own fees. In the case of the Princeton professor, that meant his children's tuition at Princeton was paid for.

2) Chances of earning additional money, under the auspices of the University, for government or other consulting projects.

3) A very generous retirement package, similar to that of the military or government employees. The "salaries" aren't so great, but the retirement benefits are.

Note that this refers to what has been in the past,for people who are now closer to retirement than to receiving tenure, and may or may not be true going forward. But the question was cast as 'up to now."