difference between a 401k and 457
One notable difference between 403b and 457 is that employer cannot make contributions to employees opting for 457 as they can to those who accept 403b or 401k. There are also differences in the contribution limits of 403b and 457.Related posts: 1  Difference Between 401K and Annuity.ne notable difference between 403b and 457 is that employer cannot make contributions to employees opting for 457 as they can to those who accept 403b or 401k. There are also differences in the contribution limits of 403b and 457. Related posts: 1  Difference Between 401K and Annuity.