Part-time consulting
One of the best ways to use a hard-earned skill in a particular area of specialization after retirement is to offer part-time consulting services to businesses. Many companies prefer to hire individuals with decades of experience for consulting work when they want expert advice at a low cost. Retirees who have worked as engineers, technicians, attorneys, and finance or marketing professionals are often ideally placed for part-time consulting jobs.
Former employers, competitors, and new market entrants and startups could benefit from the valuable insights about their business that an experienced consultant can provide.