We are the Service Employees International Union Local 105, an organization of more than 7,000 health care and property service workers in Colorado.  We are united by the belief in the dignity and worth of workers and the services they provide and dedicated to improving the lives of workers and their families and creating a more just and humane society.

Our union is part of the Service Employees International Union, the fastest growing union in North America whose 2.2 million members make up the largest healthcare union, the largest property services union, and the second largest public services union.

History of SEIU

1975 Rally for Jobs in Washington, DC

SEIU’s commitment to building a fair economy, providing workers a voice on the job, fighting for equality and ensuring that all working people can live with dignity spans the union’s 90-year history. Read more →



History of SEIU Local 105

Union Leadership Organizing Committee – November 2013

For more than 7 decades, Local 105 has been committed to providing workers a voice on the job, restoring fairness and balance to our economy, and empowering members to fight for respect and dignity in the workplace.

Founded in 1939, SEIU Local 105 is one of the oldest Locals within the Service Employees International Union.  What began 80+ years ago as a union of janitors has now become a union of janitors, health care workers, security officers, laundry workers, and airport staff.  With more than 6,500 members represented in Colorado, we are one of the fast growing unions in the state.

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