Answers are:
They are flat
A single leader makes most decisions
Roles are undefined
They are common to small businesses
In an entrepreneurial business structure, the owner-manager makes almost all decisions and performs various roles within the company. He interacts directly with the few employees he has, often performing roles that would be "beneath" the CEO of a larger company. This is called a flat organizational structure.
Roles are not generally well defined, as there are not enough employees for the level of specialization that larger companies would have. These are common features of a small business, often in the start-up phase.
