Massachusetts Mutual Life Insurance Company 401(k) Plan: Login, Facts & Contact Information
Massachusetts Mutual Life Insurance Company 401(k) Login
7,938 former Massachusetts Mutual Life Insurance Company employees still have money in this plan.
Retirement plan providers can change. This information is from the plan's 2024 filing.
Massachusetts Mutual Life Insurance Company 401(k) Plan Facts
Source: Form 5500 for plan year 2024 (Jan 1, 2024 – Dec 31, 2024), filed Sep 19, 2025. Public filing with the U.S. Department of Labor.
Money in and out in plan year 2024
- $241.3 million went into the plan in contributions, $63.8 million of it from the employer (26%).
- $432.1 million was paid out to participants.
- Investment and other income added $507.2 million.
- Administrative expenses were $786,108, about $36 per account.
How the Massachusetts Mutual Life Insurance Company 401(k) changed, 2019–2024
| Plan year | Participants | Plan assets | Employer contributions | Benefits paid |
|---|---|---|---|---|
| 2019 | 24,675 | $3.38 billion | $58.3 million | $190.9 million |
| 2020 | 25,026 | $3.86 billion | $60.9 million | $214.7 million |
| 2021 | 23,256 | $4.13 billion | $51.2 million | $429.0 million |
| 2022 | 23,641 | $3.55 billion | $60.2 million | $274.1 million |
| 2023 | 23,626 | $3.94 billion | $58.2 million | $383.9 million |
| 2024 | 23,180 | $4.33 billion | $63.8 million | $432.1 million |
Massachusetts Mutual Life Insurance Company 401(k) Contact Information
Questions about the Massachusetts Mutual Life Insurance Company 401(k)
Does Massachusetts Mutual Life Insurance Company contribute to the 401(k)?
Yes. The plan reports an employer contribution arrangement. In plan year 2024 the employer contributed $63.8 million, 26% of all contributions.
Does the Massachusetts Mutual Life Insurance Company 401(k) have automatic enrollment?
Yes. The plan reports automatic enrollment of eligible employees.
How many people are in the Massachusetts Mutual Life Insurance Company 401(k) plan?
23,180 participants at the start of plan year 2024, 13,678 of them active employees, and 7,938 former employees who still had money in the plan.
What is the average 401(k) balance at Massachusetts Mutual Life Insurance Company?
About $198,143 per account: $4.33 billion in plan assets across 21,856 accounts with a balance at the end of plan year 2024.
Who manages the Massachusetts Mutual Life Insurance Company 401(k) accounts?
Fidelity NetBenefits (listed on the filing as FID INV INST OPS) is the plan's recordkeeper, which is where participants log in to see their balance.
I no longer work at Massachusetts Mutual Life Insurance Company. How do I access my 401(k)?
Your account stays with Fidelity NetBenefits after you leave, so you can log in with the same credentials. If your balance was small, the plan may have rolled it into an IRA in your name. If you can't find it, Beagle can locate it for you.