I'm suprised that effects were very widespread and evenly distributed.

The only people I have ever known to talk about their salary/wage seem to be union members (or other blue-collar professions). Electricians, teachers, machinists, elevator repairmen, etc. On the flip side I have never heard a programmer or other white-collar employee talk about their salary/wage unless they are griping about a previous employer/contract.

Given that most of the hourly university employees probably already know what the wage scale is I'm suprised an official publication of the data would have any effect on satisfaction.