Believe it or not, most retirees report feeling bored, lonely, and, above all, completely useless after a maximum of one year of life as a retiree. All humans have an innate desire to give back to society in a way that’s useful. Now, sure, you can volunteer at your local church or non-profit charity, but many retirees are on a fixed income, which makes the prospect of doing meaningful work that actually pays cash even more enticing. With these part-time jobs, you’ll never get the short end of the stick, and you’ll be making a meaningful difference in the lives of others.