A union this morning filed an unfair labor practices charge against Knife River-Central Minnesota Division, a commercial aggregate producer in Sauk Rapids.
According to the charge, filed with the National Labor Relations Board by the International Union of Operating Engineers/Local 49, Knife River:
• Refused to reinstate a laid off worker because of his (and his brother's) union activity despite seniority on the callback list.
• Threatened to deny benefits to workers solely because of their union status.
• Reduced the method and hours paid for union members without negotiating.
• Changed employment terms and conditions for union members without negotiating.
• Limited hours worked for union members by creating production quotas without negotiating.
Knife River Corp., based in Bismarck, N.D., is the construction materials and mining subsidiary of MDU Resources Group Inc.