What are the specific conflicts between corporate jobs and freelancing from the point of view of employers?

Salary, usually jobs pays a main salary and percentages added to it for different allowances for unspecified time, freelance will usually get one salary as a package for finishing a mission or a task or a project. A corporate job something like an accountant, a freelancer would an accountant who gets paid a certain amount to cook the books and balance them to a certain point or standard then leaves.