In the United States, the normal retirement age for Social Security benefits depends on the year of birth. For those born in 1960 or later, the full retirement age is 67 years old. However, individuals can choose to start receiving reduced Social Security benefits as early as age 62, or they can delay retirement and receive increased benefits if they wait until after their full retirement age to start claiming. Additionally, many employers have their own retirement age policies, which may vary depending on the company and industry.