The partnership would have an impact on several of Indiana's industries, including agriculture, the automotive industry and the grocery business.
Some employees say they aren't being heard by administration and want more representation.
The postal service will look for other ways to save. That could include administrative cuts and reopening negotiations with unions to lower workforce expenses.
Both sides will have to wait 30 days for the judge to make a decision.
The AFL-CIO says Ohio vote in favor of bargaining rights should serve as a wake-up call to Indiana legislators.
Right-to-work legislation would bar unions from charging dues to non-members who work in union shops.
A state committee is considering prohibiting project labor agreements involving construction wages and union agreements.
Kokomo Mayor Greg Goodnight says union leaders still appear to want a variety of outcomes from the continuing House Democratic boycott.
The study was presented by Notre Dame professor Dr. Marty Wolfson, who said the numbers directly contradict a study released by the Indiana Chamber of Commerce.
The Senate Tuesday passed a bill Terre Haute Senator Tim Skinner said will significantly hurt the teaching profession.