"Non-restrictive" refers to conditions or clauses that do not limit or constrain the subject they describe. In grammar, a non-restrictive clause provides additional information about a noun but is not essential to the sentence's meaning. For example, in the sentence "My brother, who lives in New York, is visiting," the clause "who lives in New York" is non-restrictive because the main point is that "my brother is visiting." In various contexts, such as law or policy, non-restrictive measures allow for flexibility and freedom of action. For instance, a non-restrictive policy in a workplace might encourage employees to take breaks without strict limitations, promoting a healthier work environment.