Wall Street firms are pushing regulators to loosen rules governing 401(k) investment options, a shift that could expose retirement savers to higher risks and greater losses.

The push centers on fiduciary standards that currently require plan administrators and financial advisers to act in workers' best interests when selecting investments. Wall Street wants to weaken these protections, allowing brokers and fund managers more flexibility in recommending products that generate higher commissions for themselves, even when safer, lower-cost alternatives exist.

Financial services firms argue that loosening restrictions would give investors more choices and reduce administrative burden. Critics counter that workers lack the expertise to evaluate complex investment products and often default into whatever their employer or adviser recommends.

The threat carries real teeth. Looser fiduciary rules would allow advisers to steer 401(k) participants toward higher-fee mutual funds and alternative investments like private equity and hedge funds. These products often underperform low-cost index funds over time, while charging significantly more. A worker losing even 1 percent annually to excess fees could see retirement savings reduced by hundreds of thousands of dollars over a 30-year career.

Current rules emerged after the 2008 financial crisis exposed how conflicted advice devastated retirement accounts. The Obama-era fiduciary rule strengthened protections, though it faced immediate legal challenges.

For savers, the risk is straightforward. Weaker rules mean advisers face fewer penalties for recommending expensive, underperforming products. For employees with 401(k)s, this translates directly to smaller nest eggs at retirement. Self-directed investors face marketing pressure for complex products designed more for profit than performance.

Plan sponsors and HR departments would face reduced liability protections if rules change. Small employers might struggle navigating new compliance standards or face lawsuits from participants claiming inadequate oversight.

Regulators must decide whether protecting adviser profits matters