Why aren't politicians' pay raises put before the voters?

The NY city council voted to increase their own salaries. Shocking!

Here in Texas, the Austin city council did the same thing. The Austin American-Statesman was shocked at how swiftly this came about. I was shocked that the voters were given SEVEN ballot questions last week, for this and for that, but city council salary was not on the ballot.

Why can't the employers (the people) ever have any say in the salaries of the people they employ (politicians)? (Supposedly employ--politicians work only for special interests, not the people they serve.)

Always put salaries on the ballot for a vote! It's the only fair way to do it.

Why does this not happen anywhere?