Group 1 - The article discusses the reasons retirees may choose to continue working, highlighting that over one-third of retirees face unexpected expenses in retirement, and 18% are concerned about meaningful engagement and isolation [1] - Engaging in side hustles can address these challenges, with various options available that do not require prior experience [2] Group 2 - Online tutoring is presented as a viable side hustle, with potential hourly rates ranging from $15 to $30, and platforms like Preply, Wyzant, and Tutor.com available for sign-up [3] - A reliable computer with a webcam and internet connection is necessary to start online tutoring [4] Group 3 - Virtual assistants (VAs) can assist small business owners or executives with tasks such as scheduling and organizing, with an average hourly wage of $26.20 in the U.S. [5][6] - VAs can find clients through platforms like Upwork or services like Belay [6] Group 4 - Pet sitting or dog walking is suggested as a side hustle for pet lovers, allowing for companionship and activity during retirement [7] - Platforms like Rover or Wag can be used to find clients, and community referrals can also be beneficial [8]