Auto-Enrollment 403(b) and 401(k) - Expanding Retirement Access for Part-Time Workers
In the past, millions of part-time employees were excluded from workplace retirement plans. However, 2025 marks a new era in retirement savings thanks to SECURE Act 2.0, which mandates auto-enrollment in 403(b) and 401(k) plans and dramatically expands access for part-time workers.
If you’re a part-time worker—or a business or non-profit managing these employees—understanding the new auto-enrollment 403(b) and 401(k) rules is crucial. Here’s how the legislation reshapes retirement inclusion.
If you’re a part-time worker—or a business or non-profit managing these employees—understanding the new auto-enrollment 403(b) and 401(k) rules is crucial. Here’s how the legislation reshapes retirement inclusion.
SECURE Act 2.0: The Retirement Access Revolution
Passed in late 2022, SECURE Act 2.0 introduced sweeping reforms designed to:
- Boost retirement savings participation
- Simplify employer plan compliance
- Close coverage gaps, especially for underserved workers
In 2025, all new 403(b) and 401(k) plans must include auto-enrollment, transforming how part-time and full-time employees participate in long-term savings.
Auto-Enrollment Explained
Auto-enrollment means employees are automatically signed up for retirement savings—typically starting at a 3% deferral rate—unless they actively opt out.
Key Features:
Key Features:
- Applies to new plans in 2025 and beyond
- Default contribution: 3% of pay
- Auto-escalation: 1% increase per year up to 10%
- Employee opt-out: Still allowed
The new auto-enrollment 403(b) and 401(k) requirement increases employee participation dramatically, especially among lower-wage or part-time workers who may not otherwise sign up.
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Click here to Calculate!How it Affects 403(b) and 401(k) Plans?
Both 403(b) (for nonprofits, education, healthcare) and 401(k) (for private sector employees) are now governed by nearly identical auto-enrollment rules under SECURE 2.0.
In 2025 and Beyond:
In 2025 and Beyond:
- All new plans must implement auto-enrollment 403(b) and 401(k) protocols
- Part-time workers must be tracked and enrolled once eligible
- Employers must maintain clear records and provide proper notifications
This regulatory alignment improves equity in retirement access across sectors.
Part-Time Worker Eligibility in 2025
What’s Changed:
Benefits of Auto-Enrollment for Part-Time Employees
The combination of part-time eligibility and auto-enrollment 403(b) and 401(k) mandates means:
- More workers are covered earlier
- Consistent contributions start automatically
- Portability and growth regardless of employer size
- Increased financial wellness with minimal effort
This ensures part-time workers build real retirement assets even without full-time salaries.
Conclusion
The 2025 mandates for auto-enrollment 403(b) and 401(k) plans represent a monumental shift toward retirement inclusion. For employers, it’s time to prepare. For part-time workers, it’s a long-overdue opportunity to build financial security.
Embrace these changes now, because small contributions today can grow into lasting stability tomorrow.
Embrace these changes now, because small contributions today can grow into lasting stability tomorrow.
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