A Job Owner is usually the primary worker in the business and takes home almost all of the revenue because he/she has very few (if any) employees.
There is minimal distinction between their checking account and the business checking account and if the Job Owner does not show up for work (e.g. gets sick or goes on vacation), the business makes minimal to no money.
This person does not have to deal with a boss, but they do have to process the marketing, sales, hiring and vendor management in addition to fulfillment on most or all sales.
This type of business is usually under $250k annual revenues.