Another proposal the union opposes would affect pension contributions for new employees. Schnucks would give 40 cents an hour in pension contributions for employees hired in 2017 and beyond. Current employees receive 89 cents, but Schnucks would increase that to $1.12 an hour for existing employees.

The union also points to a provision that would reduce the scheduled hours reserved for full-time employees from 55 percent to 45 percent. The union estimates that would lead to 133 fewer full-time jobs.

Part-time employees hired in 2010 and after would have maximum vacation time of two weeks a year, when they previously could earn up to five weeks. The contract would increase the weeks when no employee can take vacation to four from three.

Under the proposed contract, employees could also be moved around to different departments.

Members heard from union leaders about what’s in the contract proposal and participated in a question-and-answer session before voting.

The short time that employees had to make a decision worried some union members who wanted more time to read the proposal. The contract proposal was presented to union leaders Thursday, but most employees didn’t see it until Monday.