Being a 401(k) plan sponsor is an incredible responsibility and the problem is that you may not even know it. Unlike other benefits, you have a greater responsibility in running your 401(k) plan. No one in government is going to come after you because you forgot to buy the K-Cups at Costco. Yet, there are mistakes running your 401(k) plan that may get you in a lot of trouble. There are also facets of 401(k) plan that maybe counter intuitive to what you think they should be. So this article is about spelling out some issues that you might not be aware of.