On June 17, 2014 the IRS released an updated version of its 401(k) Plan Fix-It Guide.  The Guide provides information regarding 12 of the most common 401(k) plan mistakes and the methods through which sponsoring employers may find and fix the mistakes, as well as methods to avoid the mistakes in the future.  The guide is available at www.irs.gov/pub/irs- tege/401k_mistakes.pdf.