Any type of retirement plan, pension or profit sharing, in which an employee savings feature is added. Usually, the employer's contributions or the plan's allocations (if profit sharing) are based upon the amount the individual employee elects to save.
A defined contribution plan that requires employee after-tax contributions. Employer contributions are often made on a matching basis.
A defined contribution plan in which an employee contributes, usually on a before-tax basis, toward the ultimate benefits that will be provided. The employer usually agrees to match all or a portion of the employee's contributions.