mechanic: a person who repairs and maintains machinery, motors, etc.

farmer: a person who farms; person who operates a farm or cultivates land.

plumber: a person who installs and repairs piping, fixtures, appliances, and appurtenances in connection with the water supply, drainage systems, etc.

garbage collector: a person who recollect garbage

mayor: the chief executive official, usually elected, of a city, village, or town.

cashier: an employee, as in a market or department store, who collects payments for customer purchases.

chef: the chief cook, especially in a restaurant or hotel, usually responsible for planning menus, ordering foodstuffs, overseeing food preparation, and supervising the kitchen staff.

emergency medical technician: a person who is specially trained and certified to give emergency medical care to patients before they reach a healthcare facility. Abbreviation: EMT

teacher: a person who teaches or instructs, especially as a profession; instructor.

optician: a person who makes or sells eyeglasses and, usually, contact lenses, for remedying defects of vision in accordance with the prescriptions of ophthalmologists and optometrists.

lifeguard: an expert swimmer employed, as at a beach or pool, to protect bathers from drowning or other accidents and dangers.

repairman: a person whose occupation is the making of repairs, readjustments, etc.