A Handyman, or Maintenance Handyman, conducts basic maintenance on various businesses or homes. Their main duties include repairing plumbing systems, fixing company equipment or tools and testing various company or home appliances to ensure they work properly. Handyman duties and responsibilities A Handyman is generally responsible for electrical, mechanical and plumbing related repairs. Depending on the company, they may engage with landscape maintenance employees to ensure the exterior areas are kept in good condition.