SEIU Local 509
 

Staff Accountant

Based in Marlborough, MA

 

ABOUT SEIU LOCAL 509
SEIU Local 509 is a fast-growing, progressive union representing over 28,000 state workers, human service workers, higher education faculty and family childcare providers in Massachusetts.

SEIU Local 509 is part of the Service Employees International Union (SEIU), one of the largest and fastest-growing labor unions in the United States. In the current political environment, the union has a steadfast vision to increase participation and power among its rank-and-file membership.

JOB DESCRIPTION
SEIU Local 509 is hiring a full-time Staff Accountant, based in our Marlborough, MA office. This position is part of the Finance Department and will contribute to the Local’s accounting, disbursement, reconciliation, payroll, benefits administration, reporting, audit, and budget support functions. The Staff Accountant will work closely with finance staff, administrative operations within the Finance and Administration Department, the Data Department, third-party payroll and benefits providers, officers, vendors, consultants, and other stakeholders to maintain accurate financial records, timely processing, strong internal controls, and dependable operational support.

This position is intended for a candidate with a strong accounting foundation and meaningful experience across core areas of finance operations, payroll, benefits coordination, reconciliations, and reporting. The successful candidate will be expected to assume a broad range of responsibilities with limited ramp-up, while receiving training on Local 509 systems, processes, and union-specific workflows.

This position is also intended to provide backup capacity in key payroll, benefits, and related administrative functions currently concentrated in existing staff roles.

GENERAL STATEMENT OF DUTIES
Accounting and Financial Operations

• Process and track accounts payable, staff reimbursements, vendor payments, and other disbursements
• Prepare and maintain documentation for checks, ACH payments, recurring payments, and credit card activity
• Maintain vendor files, payment records, and organized accounting support files
• Prepare account reconciliations, including bank accounts, credit cards, prepaid expenses, accrued liabilities, payroll-related accounts, and other assigned balance sheet accounts
• Prepare journal entries, recurring entries, accruals, and other accounting adjustments as assigned
• Maintain accounting schedules for fixed assets, benefits, insurance, retirement, payroll, and other assigned areas
• Review and reconcile dues revenue and other assigned receipts or accounting activity received from internal and external sources

Close, Reporting, Budget, and Audit Support

• Participate in monthly and year-end close processes, including reconciliations, schedules, and supporting workpapers
• Prepare internal financial reports, Trustee reporting materials, and other schedules for leadership as assigned
• Assist with budget tracking, budget-to-actual review, and related accounting analysis
• Assist with annual financial audits, pension and 401(k) audits, workers compensation audits, and other external review requests

Payroll and Benefits Administration Support

• Process payroll-related workflows in NetSuite, ADP, Dayforce, and/or other payroll systems assigned
• Review payroll data, changes, earnings and deduction updates, and related documentation
• Provide backup for payroll preparation, review, and payroll-related reconciliations
• Work directly with third-party payroll, benefits, retirement, and insurance providers to support accurate administration and timely resolution of issues
• Coordinate employee benefits, including 401(k), pension, health insurance, dental insurance, vision insurance, flexible spending accounts, and other benefits provided under the collective bargaining agreement
• Assist with onboarding, employee changes, payroll deductions, and benefits-related follow-up
• Provide front-line onsite support for routine payroll, benefits, and related administrative questions

Coordination, Process Improvement, and Documentation

• Coordinate with staff, officers, vendors, consultants, outside service providers, administrative operations within the Finance and Administration Department, and the Data Department to resolve accounting, payroll, benefits, dues revenue, and payment-related issues
• Maintain finance interfaces with administrative operations and with internal dues revenue processes and related data workflows
• Monitor shared finance and related operational communications and respond to routine inquiries in a timely and professional manner
• Help maintain consistent internal control procedures across assigned accounting, payroll, benefits, and related workflows
• Develop, review, update, and document standard operating procedures and workflow documentation for finance, payroll, benefits, dues revenue interfaces, and related administrative processes
• Assist with process improvements across accounting, payroll, benefits, and related workflows
• Provide backup support across finance functions, including disbursements, reconciliations, reporting, payroll, and other accounting operations as needed

Additional Duties

• Other Finance or HR duties as needed

JOB QUALIFICATIONS
Accounting and Financial Operations

• Strong accounting foundation with relevant experience in general accounting, accounts payable, reconciliations, disbursements, and related finance operations
• Ability to prepare and maintain accurate financial records, supporting schedules, account reconciliations, and documentation with a high level of accuracy and independence
• Experience with journal entries, accruals, monthly close support, and other core accounting processes preferred

Close, Reporting, Budget, and Audit Support

• Experience supporting financial reporting, budget tracking, audit preparation, and related workpapers preferred
• Demonstrated ability to manage multiple workstreams, meet deadlines, and maintain strong attention to detail in a deadline-driven environment
• Ability to exercise sound judgment and maintain confidentiality with sensitive financial and personnel information

Payroll and Benefits Administration Support

• Experience supporting payroll processing, payroll changes, deductions, and related payroll documentation
• Experience supporting payroll processing in ADP, Dayforce, or similar payroll systems strongly preferred
• Experience working with third-party payroll, retirement, insurance, or benefits providers preferred
• Experience supporting employee benefits administration, including 401(k), pension, health, dental, vision, flexible spending, and related plans preferred

Coordination, Process Improvement, and Documentation

• Experience developing, reviewing, and documenting standard operating procedures preferred
• Ability to communicate and work effectively with staff, members, officers, vendors, consultants, outside providers, and other stakeholders
• Ability to work independently and collaboratively as part of a team
• Ability to learn and use accounting, payroll, expense management, and financial reporting systems
• Experience with NetSuite is strongly preferred; candidates without direct NetSuite experience should demonstrate success learning and using comparable ERP or accounting systems
• Strong proficiency in Microsoft Excel, Microsoft Office, and Google Suite

Education and Other Qualifications

• Bachelor’s degree with a concentration in Accounting, Accounting Information Systems, Auditing, Finance, Business Management, or a closely related field required
• Human Resource experience preferred
• Experience with union accounting ideal
• Bilingual skills are a plus
• Commitment to progressive social change and the mission of the labor movement

SUPERVISION
The Staff Accountant works under the supervision of the Director of Finance.

SALARY & BENEFITS
This is a full-time bargaining unit position based in Marlborough, MA. The position will be filled within Step 1 through Step 5, with a salary range of $81,425.37 to $92,833.96, depending on experience and qualifications and in accordance with the applicable collective bargaining agreement. Placement within the range will reflect the depth and breadth of the candidate’s direct individual-contributor experience across the responsibilities of the role. Placement at the top of the range would generally be appropriate only for a candidate demonstrating substantial experience and a high level of proficiency across the major functional areas of the position.

SEIU Local 509 offers a generous leave and benefits package, including health insurance with FSA and HRA, dental insurance, short and long-term disability, a pension, an optional 401(k), and generous paid time off.

Occasional offsite attendance at meetings, training, or union events may be required.

APPLICATION PROCESS
SEIU Local 509 is an equal opportunity employer with a strong commitment to diversity. Women, people of color, and LGBT+ candidates are strongly encouraged to apply.

To Apply:
Interested candidates should submit a résumé and cover letter to jobapplication@seiu509.org and indicate “Staff Accountant” in the subject line. Applications will be accepted until noon on Thursday, April 9, 2026.

Candidates who advance should expect in-person interviews at our Marlborough, MA headquarters.

We want to interview the best candidates for our organization. If you think you have the skills to fill the role and serve our mission, even if you do not meet every qualification in the list, please consider applying. We review all applications thoroughly and are open to considering candidates from many different backgrounds.

No phone calls please.