Statutory minimum wages not rising are not an example of worker exploitation. Even if there were no minimum wage laws worker exploitation does not necessarily follow.

Additionally, in your example while the federal minimum wage might not have increased many states have their own minimum wage laws that have changed over the period you describe.

The closest statement you could make is that an absence of minimum wage laws may make it legal to employ people at an exploitatively low wage. This is not really the name thing.