Of all, employees that have a 401k method all have several choices to purchase. For instance, if your contribute 2% of your pay to your 401( k) each pay period, your company might match your contributions, basically doubling your money. Contributions can be made up to $4,000, and can be withdrawn at any time without tax or charge (earnings withdrawn may undergo charge and tax if withdrawn before age 59 1/2 and particular other conditions are not met).