Delmaine Donson/ Getty Images Key Takeaways Most Americans retire earlier than expected, with health issues and job loss being the main drivers of unplanned early exits. Experts recommend that people in their 40s and 50s plan by looking at best and worst case retirement scenarios and consider whether they can continue to work in their current jobs. Catch-up contributions to 401(k)s and IRAs can help boost savings, but planning on working longer is a risky retirement strategy given that many people re ...