401(k) Retirement Planning - Is It Right For You? The 401(k) Retirement Plan is the very first thing that comes into the mind of anyone planning his retirement. While this is a prominent retirement plan in the United States, it is also applicable in other countries with basically similar financial system as the US. Introduced by the Internal Revenue Code in 1978 and administered by the Employee Benefits Security Administration, it aims to provide...... Source : Ira Rule