Other scenarios
What if you can do periodic transfers of your group retirement money, including matching contributions to a discount broker? In that case the cost savings of the matching investor would be decreased significantly and that would make the company match even more attractive.

What if the MERs of your employer investments are less than the 3% used in the example? Then the employer match account is even better than with the higher MER investments.

What if you contribute at a rate higher than the company matches for? i.e. the company matches 3% of your salary but you contribute 10%. In that case, the contribution that is getting matched (3%) gives you the same benefit as in my example. For the remaining 7%, there is no benefit to contributing it to your company employee plan unless it provides low cost investing options.

Summary
In most cases an employee will be far better off taking advantage of any kind of company matching contribution in their group retirement account regardless of the fees charged in the company plan and regardless of any transfer-out restrictions.

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