City Residency Requirements (B)

I forgot to ask about the city employees who are NOT firefighters or LEOs (Law Enforcement Officers) or other emergency personnel employed by the city. Those three groups seem to be the focus and main justification for residency laws.

What is the justification for keeping the 8,000 city employees (about 1 for every 50 citizens) who are NOT emergency workers? Aside from Police, Fire and Emergency Services we have 22 other departments, almost none of which need to be available on 5minutes notice 24/7 beyond the regularly scheduled shift workers:
Aging
Building & Housing
City Planning
Civil Service
Three kinds of development:
Community Development
Workforce Development
Economic Development
Community Relations
Finance
Health
Law
Equal Opportunity
Recreation & Properties
Personnel and Human Resources
Port Control
Public Safety
Public Utilities
Public Service
Employee Services
Prosecutor
Press
TV20

What is the real reason that the administration was so adamant about this subject? Why couldn't these good folks have the same right to choose where to live as the teachers and staff employed by the city within the Cleveland Metropolitan School District? Maybe CMSD's union is powerful enough to dictate the status quo. Maybe in the transfer of CMSD to city control there weren't enough qualified city residents to replace all the teachers who would have been fired for not moving to Cleveland.

Along that train of thought, isn't it now possible to hire highly qualified people to work for us who don't live in Cleveland? Or will the city continue to covertly enforce city residency requirements by not considering qualified people outside of Cleveland? I'm predicting the latter rather than the former. We'll see.