Join SEIU Local 105 and build the future that we all deserve.

Across Colorado, workers are getting squeezed, and it’s no accident.

Rent is up. Groceries are up. Healthcare costs more every year. But your paycheck? Not keeping pace. And on the job, it’s only getting harder. More patients, fewer staff, cut hours with the same workload, less control over your own schedule.

This is what it looks like when billionaires and big corporations write the rules and when corporate politicians let them. Workers and communities are under attack: immigrants, healthcare workers, janitors, airport workers, security officers and everyday people are facing policies that threaten our rights, our health, and our futures.

The most powerful thing you can do right now is get organized

Unions are the strongest protection workers have, giving workers real power to fight back against authoritarian crackdowns and the influence of billionaires who put profits over people.

A union gives workers a voice, the ability to negotiate fair pay, safe working conditions, and respect on the job. It’s the most effective way to stand together and defend our rights. If you want to take action and explore forming a union at your workplace, now is the moment to get organized.

Your coworkers need you. Your community needs you. 

Fill out the form below and take the first step toward building power at your workplace.

Better care happens when workers are respected. At Kaiser Permanente, union members won staffing standards and working conditions that put patients first. That's what a union makes possible.
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Denver's downtown doesn't run itself. Union janitors keep our buildings clean, our streets safe, and our city moving, and with our Master Contract, workers across different companies stand united to make it even better. This is what worker power looks like.
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DEN is one of the busiest airports in the world and union workers keep it running. Through years of organizing, airport workers have won massive raises and earned a real voice in how DEN operates. That's what being organized delivers.
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When mental health workers are supported, whole communities are stronger. Union mental health workers on the front lines of Colorado's crisis centers and unhoused services are building power to demand better for themselves and for every single person they serve.
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A union contract is just the beginning. When workers across industries unite, we become one of the most powerful forces in our communities. We build the kind of Colorado where every person can thrive. That's the promise of union power.
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Why Join SEIU Local 105?

SEIU 105 is the largest healthcare and property service union in Colorado, representing over 8,000 healthcare, janitorial, security, and airport workers throughout the state and the southwest.

Founded in 1939, 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.

Here in Colorado, Local 105 members have used union power to win real things. In 2024, service workers won $22 million in wage increases through collective bargaining.

Through political action and legislation, we won wage increases for janitors and airport workers — not because companies did the right thing, but because workers organized and demanded it. In 2025, members won back over $800,000 in stolen wages, vacation time, and lost pay from employers who thought they could take it without consequence.

Those wins didn’t come from asking nicely. They came from workers being organized, connected, and willing to act together.

That’s exactly what the billionaire class is trying to end.

Stay organized. Stay connected. Don’t let them make us small.

Let's Connect!

Get in touch with one of our union organizers. Please be assured that we fully respect your confidentiality and will never disclose anything about your inquiry to your employer or anyone else.