Hourly employees at Mountain Cement Co.’s Laramie, Wyo., cement plant voted in favor of unionizing last month, citing safety concerns, perpetual turnover and unpredictable schedules.
The National Labor Relations Board confirmed the election results with 40 ballots cast in favor of union representation and 26 against. One ballot was ruled invalid after the worker checked both boxes, leaving a total of 66 valid votes.

The International Brotherhood of Boilermakers will now represent the unionized employees in upcoming contract negotiations.
“As Mountain Cement Company prepares to expand production through its K3 project, potentially doubling the workforce, the Boilermakers’ win ensures all workers will face that future with strong representation and a secure voice on the job,” said the International Brotherhood of Boilermakers in a statement.
According to the Wyoming AFL-CIO, the state hasn’t seen a union election of this size, or a union win of any size, in the last 15 years. Only 5.6% of wage and salary employees in Wyoming were union members in 2024, down from a high of 13.4% in 1990, per the U.S. Bureau of Labor Statistics. The 2024 rate was below the national average of 9.9%.