Final answer:
A small employer would NOT have a restricted ability to enter into a contract, in contrast to a mentally ill person, a minor, or a person under the influence of alcohol, who would typically have such restrictions.
Step-by-step explanation:
When considering which of the following would NOT have a restricted ability to enter into a contract, we look at the legal capacity to contract. Individuals such as a mentally ill person, a minor, or a person under the influence of alcohol traditionally have limitations on their capacity to enter into binding contracts. These individuals may lack the requisite mental capacity or legal status to understand and commit to the terms of a contract.
On the other hand, a small employer inherently can enter into a contract based on size alone. Therefore, a small employer would not have a restricted ability to enter into a contract unless other factors impaired their capacity to do so.