An employer contribution is money your employer adds to your retirement account as part of your benefits. This is separate from the money you choose to contribute yourself. In workplace retirement plans like 401ks or Solo 401ks, employers can contribute a certain amount based on your salary or business earnings. These contributions help grow your savings faster and are one of the main perks of using a retirement plan through work or self-employment. They can be made on a pre-tax basis and often follow specific rules set by the plan.