IIRC, the law is phrased in terms of "compensation". For example: > To be considered a volunteer, the work performed by the individual must meet the following

IIRC, the law is phrased in terms of "compensation". For example: > To be considered a volunteer, the work performed by the individual must meet the following criteria: > * No expectation of compensation ... > * Work at a for-profit entity is considered employment and must be for pay. The only exception is made for training programs where the trainee functions, to some degree, like an employee, but is under close supervision and provides no significant measurable work for the employer. The trainee must not take the place of a paid employee. For example, students who are considered student interns may engage in unpaid internships at for-profit organizations. See https://internationalcenter.umich.edu/students/employment-volunteer https://internationalcenter.umich.edu/students/employment-vo...