Let's say you can't pay your rent on time, and another tenant was given an extension in a similar situation. If you weren't offered the same benefit, the landlord may be forced to extend your time to pay also. Otherwise, it can fall within the legal definition of discrimination. You will have to be able to prove that the other tenant got preferential treatment. That may involve having your lawyer subpoena the person to appear in Housing Court with documents. This principle may apply to any circumstance in which one or more tenants receive advantages from the landlord that others do not.