Final answer:
Spencer's pre-tax payroll deduction retirement account is likely a defined contribution plan, such as a 401(k) or 403(b), which are tax deferred and portable, and wherein both employer and employee can contribute.
Step-by-step explanation:
Spencer has a retirement account through his employer, where contributions are taken before payroll taxes, indicating that Spencer's retirement account is a defined contribution plan such as a 401(k) or a 403(b). These types of plans are tax deferred, meaning that contributions reduce a person's taxable income and the taxes on them are not paid until funds are withdrawn, typically during retirement.
Employers often contribute a fixed amount to these accounts with the employees contributing as well, and the investments within these accounts will generally grow tax-free until retirement. These plans are also portable, meaning if Spencer changes employers, he can take his retirement account with him, which is a significant benefit compared to traditional pension plans.