Most commonly, employers contribute to a defined contribution plan like a 401(k), 403(b), or 457(b), but some still fund traditional pensions (defined benefit plans) or SEP/SIMPLE IRAs depending on the workplace.

Main employer‑contributed account types

  • 401(k) (for most private, for‑profit companies)
    • Very common in the U.S. for full‑time employees.
* Employer contributions usually take the form of a “match” (for example, 50% of what you put in up to a certain percent of salary).
  • 403(b) and 457(b) (for schools, nonprofits, and government)
    • 403(b) plans are similar to 401(k)s but typically used by public schools, universities, and many charities.
* 457(b) plans are often offered to state and local government workers and some nonprofits; contributions can come from both employee and employer.
  • Traditional pension (defined benefit plan)
    • Less common now in the private sector but still seen in some large companies and many government jobs.
* Employer promises a set benefit in retirement, usually based on years of service and salary, and the employer funds and manages the plan.
  • SIMPLE IRA and SEP IRA (often at small businesses)
    • SIMPLE IRAs let employees contribute and require the employer to either match contributions or make a fixed contribution for eligible employees.
* SEP IRAs are funded only by the employer; contributions are a percentage of pay, and employees generally cannot contribute directly themselves.

How to find which type you have

  • Check your paystub or benefits portal for plan names like “401(k),” “403(b),” “457(b),” “SIMPLE IRA,” or “Pension/Defined Benefit.”
  • Look at your employee handbook or annual open‑enrollment materials; they usually spell out the plan type and whether there is a match or employer contribution formula.
  • If it is not clear, HR or your benefits administrator can tell you exactly which retirement account your employer contributes to and how the contribution works.

Quick scoop: If you work in a typical private‑sector job, your employer is most likely contributing to a 401(k); if you work in education, nonprofit, or government, it’s more likely a 403(b), 457(b), or a pension‑style plan.

TL;DR: The type of retirement account your employer contributes to depends on your sector and company size, with 401(k)s, 403(b)s, 457(b)s, pensions, and SIMPLE/SEP IRAs being the main options.

Information gathered from public forums or data available on the internet and portrayed here.