Quick question about unpaid internship at for-profit company

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Illustrative scenario prepared by my practice.
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Hypothetical question

I'm dealing with a situation and need some guidance.

unpaid internship at for-profit company. I've been dealing with this for about 4 months now and the situation isn't improving.

I have worked at this company for 4 years. My position is non-exempt and I do have a written employment agreement beyond the standard offer letter just saying.

Has anyone been through something similar? What worked for you?