Many Americans have a side job to support their income. A new report from bankrate.com shows that 37% of Americans have at least two jobs, including more than half of millennials. The most popular side jobs include home repair, landscaping, online sales, crafts and childcare. About 59% of people say they do it for more disposable income while 38% say it's necessary to meet their regular living expenses. The median side job earns about $200 a month. Experts say having more than one source of income is a smart move and having a side gig is a great way to boost our savings and meet other financial goals.