Retirement plans are financial strategies designed to help individuals save and invest money for their future when they stop working. These plans can include options like 401(k) accounts, IRAs (Individual Retirement Accounts), and pension plans, which provide a steady income during retirement. Contributions to these plans often come from both employees and employers, and they may offer tax advantages to encourage saving. Choosing the right retirement plan depends on various factors, including income level, employment status, and personal financial goals. It's essential to start saving early and regularly to build a sufficient nest egg, ensuring a comfortable lifestyle in retirement.