Lifetime of Earnings Estimate how much you have the potential to earn during your working years. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content 5 Benefits of Working in Retirement Here are 5 reason why you may consider working through retirement. Volunteering in Retirement For many, retirement includes contributing their time and talents to an organization in need. What Is a Roth 401(k)? Roth 401(k) plans combine features of traditional 401(k) plans with those of a Roth IRA.