There’s a lot to like about employer-sponsored retirement plans like the 401(k). They’re convenient, funded via automatic payroll deduction. They offer tax savings; contributions lower a participant’s taxable income, and investments grow tax-free. And many companies sweeten the deal by pitching in their own money to encourage employees to save.

But even this most valuable of company perks can be ruined by high retirement plan fees and crummy investment choices. It’s these factors that have more and more employees crying foul and filing lawsuits against their bosses — more than a dozen in the past year, Bloomberg BNA reported — for the equivalent of 401(k) malpractice.

Potential awkwardness on annual Boss’s Day aside, the recent rash of worker uprisings over 401(k) fees is a good rallying cry for for all investors to take a closer look at their workplace retirement plan.

The quality of a 401(k) comes down to the breadth of investment options, the management fees charged on those investments and the plan’s administrative costs. Unfortunately, if you work at a small company, the terms in your plan may not be the best.

A 2013 defined contribution/401(k) fee study by Deloitte on behalf of the Investment Company Institute found that all-in fees, including administrative, recordkeeping and investment fees, at small companies are nearly four times higher than those for larger plans. Companies with $1 million to less than $10 million in plan assets pay a median 1.27%, compared with 0.37% for those with $500 million or more. In other words, $12.70, versus $3.70, of every $1,000 a worker invests is lost to 401(k) fees.

An employee’s 401(k) fee mileage depends on the investments chosen as well as fees the employee can and cannot control. Three key questions to ask when evaluating retirement accounts:

How plentiful are the investment options? According to research from the Investment Company Institute and BrightScope, the average 401(k) offers 25 investment choices. That’s more than enough as long as the menu of funds includes all the ingredients necessary to build a well-balanced retirement portfolio — a diversified mix of stocks, bonds and cash — at a reasonable price.

The best 401(k) plans offer an array of low-cost mutual funds that let investors cover as many bases as possible. Even then, some savers may find the choices too limited for their needs. In that case, they can use an individual retirement account to fill in the gaps.

What is the markup on the mutual funds in the plan? A plan offering plenty of funds, but only of the high-priced variety, is no better than a plan with limited offerings. A good rule of thumb is to steer clear of any fund with an expense ratio of 1% or more. And although index mutual funds are known for their low fees, beware of expense ratio markups there, too.

Run your plan through our 401(k) fee analyzer to see how the investment fees on the funds in your plan stack up. Or, go directly to the source for this information, via your plan’s 401(k) prospectus or the administrator’s website, since the expense ratio on a fund purchased in a 401(k) may be different from what’s posted on a fund company’s own website.

Who pays for housekeeping duties? Most companies outsource the logistical care and maintenance of administering a 401(k). Who picks up the tab? It might be you. It’s up to your boss to decide.

The plan’s fee arrangement details are disclosed in the 401(k) summary plan description or annual report. The most generous companies pay the entire bill. Others cover only a portion. The mark of a subpar plan is one that asks workers to foot the entire bill.

Even the worst high-fee, low-choice 401(k) is worthwhile — at least up to a point — if it includes an employer match on contributions. Never leave that money on the table. But for those workers stuck with a plan that lacks even that silver (dollar) lining:

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Dayana Yochim is a staff writer at NerdWallet, a personal finance website. Email Twitter: @dayanayochim.

This article was written by NerdWallet and a version was originally published by The Associated Press.



The article How To Tell If Your 401(k) Is a Dud originally appeared on NerdWallet.