Direct answer: ERISA fiduciary responsibility is built around acting solely in participants' and beneficiaries' interests, acting prudently, following plan documents when consistent with ERISA, diversifying investments, and paying only reasonable plan expenses. The Department of Labor's official guidance also emphasizes documenting the process used to make fiduciary decisions.
That is why ERISA matters so much to AIF candidates. The exam is not a law-school test, but it expects you to think like someone who understands that retirement-plan fiduciary work is process-driven and review-driven.
The five practical ERISA duties AIF candidates should know cold
- Act solely in the interest of plan participants and beneficiaries.
- Carry out duties prudently.
- Follow plan documents unless they conflict with ERISA.
- Diversify investments to minimize the risk of large losses.
- Pay only reasonable plan expenses.
Those duties are laid out clearly in the DOL booklet Meeting Your Fiduciary Responsibilities.
Why documentation is central
The DOL says prudence focuses on the process for making fiduciary decisions and that documenting decisions and their basis is wise. That sentence alone explains a large share of AIF question logic. The exam repeatedly asks whether the fiduciary process was disciplined, documented, and repeated according to policy.
How delegation really works
Another ERISA point that matters on the exam: delegation does not mean indifference. The DOL explains that if an employer appoints a qualified investment manager, the employer is still responsible for selection and periodic monitoring of that manager. AIF scenarios often test exactly this misunderstanding.
ERISA mistakes that map directly to AIF weakness
- no written committee structure or unclear fiduciary roles
- an IPS that exists but does not actually guide review decisions
- fees that are rarely revisited for reasonableness
- monitoring that only happens after participant complaints
- service-provider selection based on convenience instead of documented due diligence
AIF reading lens for ERISA questions
Whenever you see a plan-level scenario, ask:
- Who is acting as a fiduciary here?
- What written plan or policy documents matter?
- What prudent review or monitoring step is missing?
- Is the process protecting participants or protecting convenience?
Keep going with a structured AIF study stack
Use this page with the plan-sponsor guide and the IPS guide if your AIF prep is tied to real retirement-plan oversight responsibilities.
Our PDF guide organizes the exam blueprint, prudent process checkpoints, and practice drills into one study flow. If you want interactive help, SimpuTech's AI tutor can quiz you on the AIF domains, IPS decisions, ERISA basics, and fiduciary scenarios.