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SEIU Local 1
What Does SEIU Local 1 Do?
SEIU Local 1 is a prominent labor union representing approximately 50,000 service workers across the Midwestern United States, including Illinois, Indiana, Michigan, Missouri, Ohio, and Wisconsin. Members include janitors, security officers, airport workers, higher education faculty, food service employees, and more. The union is dedicated to improving the lives of its members and all working people by fighting for fair wages, quality healthcare, secure jobs, and a voice in the workplace. SEIU Local 1 is affiliated with the Service Employees International Union (SEIU), a larger organization with millions of members across North America.
Where Is SEIU Local 1's Headquarters?
HQ Function
The Chicago headquarters serves as the primary administrative, strategic planning, and coordination center for SEIU Local 1's activities, including organizing, bargaining, member services, and advocacy across its multi-state jurisdiction.
Notable Features:
Located in the One Illinois Center, a well-known skyscraper in Chicago's Loop, offering modern office facilities and central accessibility.
Work Culture:
The work culture at SEIU Local 1 headquarters is mission-driven, dynamic, and collaborative, with a strong emphasis on social justice, worker empowerment, and member advocacy.
HQ Significance:
The headquarters is significant as the nerve center for a large and influential union local, coordinating campaigns and support for 50,000 workers in critical service industries throughout the Midwest.
Values Reflected in HQ: The headquarters' operations reflect the union's core values of solidarity, equity, community action, and the persistent fight for economic justice for working families.
Location:
SEIU Local 1's operations are concentrated in the Midwestern United States, specifically serving members in Illinois, Indiana, Michigan, Missouri, Ohio, and Wisconsin. While its parent organization, SEIU, has an international presence (primarily in North America), SEIU Local 1's focus is on regional advocacy, organizing, and member representation within these states to build power for service workers locally.
Street Address:
111 E Wacker Dr, Suite 2500
City:
Chicago
State/Province:
IL
Country:
USA
Where Else Does SEIU Local 1 Operate Around the World?
Detroit, MI/USA
Address: 2610 Cass Ave, Detroit, MI 48201
Serves as a key hub for union activities in Michigan, focusing on local contract negotiations, member representation, and community engagement.
Cleveland, OH/USA
Address: 3250 Euclid Ave, Suite 125, Cleveland, OH 44115
Focuses on strengthening worker power, collective bargaining, and political action for service employees in Northeast Ohio.
St. Louis, MO/USA
Address: 2725 Clifton Ave, St. Louis, MO 63139
Represents and advocates for service workers in Eastern Missouri and Southern Illinois, ensuring fair treatment, better wages, and improved working conditions.
Indianapolis, IN/USA
Address: 1701 W. Washington Street, Indianapolis, IN 46222
Drives organizing initiatives and contract enforcement to uplift working families in Indiana's capital city and surrounding areas.
Buying Intent Signals for SEIU Local 1
Highperformr Signals uncover buying intent and give you clear insights to target the right accounts at the right time — helping your sales, marketing, and GTM teams close more deals, faster.
Who's Leading SEIU Local 1? Meet the Executive Team
As of April 2025, SEIU Local 1' leadership includes:
Who's Investing in SEIU Local 1?
SEIU Local 1 has been backed by several prominent investors over the years, including:
What Leadership Changes Has SEIU Local 1 Seen Recently?
The most significant recent leadership transition for SEIU Local 1 was the election of Genie Kastrup as President in January 2023, succeeding Tom Balanoff who retired. This marked a historic change, with Kastrup becoming the first woman to lead the union. While these specific events occurred slightly outside a strict 12-month window from mid-2024, they represent the most current major shifts in top executive roles influencing the union's direction over the past year. No other major public announcements of hires or exits at the top executive V.P. level or above have been identified in the immediate past 12 months (approx. May 2023 - May 2024).
Departures
New Appointments:
What Technology (Tech Stack) Is Used bySEIU Local 1?
Discover the tools SEIU Local 1 uses. Highperformr reveals the technologies powering your target accounts — helping your sales, marketing, and GTM teams prioritize smarter and close faster.
SEIU Local 1 Email Formats and Examples
SEIU Local 1 likely uses a common professional email format, often combining an employee's first initial and last name, or full first name and last initial, followed by the domain '@seiu1.org'. For leadership and staff, the [first_initial][lastname]@seiu1.org pattern is frequently observed.
flastname@seiu1.org
Format
gkastrup@seiu1.org
Example
75%
Success rate
What's the Latest News About SEIU Local 1?
seiu1.org • April 26, 2024
SEIU Local 1 Security Officers at Cleveland Hopkins Airport Reach Tentative Agreement
Security officers at Cleveland Hopkins International Airport, members of SEIU Local 1, secured a historic tentative agreement with their employer, averting a potential strike. The agreement includes significant wage increases and improved benefits....more
seiu1.org • April 10, 2024
SEIU Local 1 Janitors Ratify Historic Contract, Averting Strike in Downtown Chicago
Thousands of SEIU Local 1 janitors in downtown Chicago ratified a new contract, achieving wage increases, maintained healthcare benefits, and other improvements, successfully avoiding a strike....more
seiu1.org • March 22, 2024
St. Louis Lambert International Airport Workers with SEIU Local 1 Win Groundbreaking Contract with $15 Minimum Wage
Airport workers at St. Louis Lambert International Airport, represented by SEIU Local 1, won a new contract that establishes a $15 per hour minimum wage and other key benefits, marking a significant victory for low-wage workers....more
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