SEIU 509

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SEIU 509 At over 28,000 workers and growing, SEIU 509 is the union for Massachusetts health and human service workers and educators.

SEIU Local 509 represents more than 20,000 human service workers and educators throughout Massachusetts. We provide a variety of social and educational services to elders, at-risk children and people with mental illnesses or developmental disabilities — in both public and private sector settings. From mental health clinicians and social workers to early childhood educators and college professors, Local 509 members are united in our mission to raise living standards working families while improving the quality and affordability of the services we provide. SEIU Local 509 is part of the Service Employees International Union, the largest and fastest-growing labor union in the United States, with 2.1 million members. Focused on uniting workers in four sectors –- public services, long term care, property services, and hospital systems — SEIU is the nation’s largest health care union, the largest property services union, and the second-largest public employee union. We are always glad to receive feedback from the SEIU Local 509 online community. Please contact us at [email protected] with your questions, comments or concerns.

✊ After more than a year of contract negotiations, collective actions, & growing support on campus—over 600 Simmons Univ...
10/30/2026

✊ After more than a year of contract negotiations, collective actions, & growing support on campus—over 600 Simmons University adjuncts have reached their first tentative agreement! Adjuncts stood strong and made sure to win the best contract possible. When we fight, we win.

Whether you’re voting early or voting in person on Nov. 3, refer to our ballot questions guide! There’s a lot at stake t...
10/28/2026

Whether you’re voting early or voting in person on Nov. 3, refer to our ballot questions guide! There’s a lot at stake this midterm election–stay informed and bring this graphic with you to the polls. 🗳️

🎉 Family Child Care providers have reached a tentative agreement! Our wins are a direct reflection of the bold actions f...
10/27/2026

🎉 Family Child Care providers have reached a tentative agreement! Our wins are a direct reflection of the bold actions family child care workers took collectively, including marching on the boss, petition gathering, and making calls to state legislators. Stay tuned for more information soon on the ratification vote date & locations!

10/23/2026

SEIU 509 state workers: Meet some of your bargaining committee members who are ready to fight for a strong contract public sector workers deserve! Stay tuned for more đź’Ş

North Suffolk Community Services (NSCS) clinicians and therapists rallied this week in Chelsea to demand a fair contract...
10/22/2026

North Suffolk Community Services (NSCS) clinicians and therapists rallied this week in Chelsea to demand a fair contract that secures livable wage increases! Our mental health professionals deserve better and we demand management to return to the bargaining table ✊

We thank Chelsea City Councilor At-Large Roberto Jiménez Rivera for standing with us!

Boston University is a union campus! ✊ Earlier this week, SEIU 509 lecturers, allies, and students rallied to deliver a ...
10/21/2026

Boston University is a union campus! ✊ Earlier this week, SEIU 509 lecturers, allies, and students rallied to deliver a joint petition demanding fair contracts for union workers who make BU run. For 17 months, lecturers have been fighting for a strong contract that secures fair compensation, workload protections (including around AI), and protections for international faculty. Together, with SEIU Local 888 and 32BJ SEIU we call on the BU administration to do right by its workers.

✊ This is what worker power looks like! Over a year since MAB Community Services workers won their union, a resolution f...
10/19/2026

✊ This is what worker power looks like! Over a year since MAB Community Services workers won their union, a resolution from the Boston City Council, & growing community support—MAB workers have reached a strong tentative agreement! Workers stood united and won annual wage increases, more earned time off, and a retirement match. When we fight, we win!

We stand in solidarity with SEIU 509 DCF Metro-Region Vice President Marianne Walles who has been unfairly & unjustly ta...
10/16/2026

We stand in solidarity with SEIU 509 DCF Metro-Region Vice President Marianne Walles who has been unfairly & unjustly targeted by agency management for performing protected union activity. Together, we say: hands off our union rights! đź’Ş

Today and everyday, SEIU 509 honors the rich & varied cultures and histories of indigenous people, and acknowledge the p...
10/12/2026

Today and everyday, SEIU 509 honors the rich & varied cultures and histories of indigenous people, and acknowledge the painful history of violence and colonization that continues to impact indigenous communities. Solidarity forever!

📞 TODAY: Take action in solidarity with Massachusetts Nurses Association. Call Governor Healey and let her know you stan...
10/09/2026

📞 TODAY: Take action in solidarity with Massachusetts Nurses Association. Call Governor Healey and let her know you stand with Brigham Nurses & MGB Home Care Clinicians in their fight for fair contracts!

The most important thing you can do today to support Brigham nurses is call MA Governor Maura Healey RIGHT NOW! Comment below after you call!

đź”— Call script: massnurses.org/MGB

Address

293 Boston Post Road West, 4th Floor
Marlborough, MA
01752

Telephone

+17748437509

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