Better be pro-bono. Cause no tipped worker I know could even afford an hour of lawyer time, let along dozens or hundreds of billable hours for defeating tipping.
You all realize that tipped wage is $2.35/hr, which isn't usually enough paid consistently either.
Restaurants and tipped places are THE WORST.
That is the federal tipped wage (which actually seems to be $2.13/hr). It depends which state you live in. Seems like only 15 states use the federal amount [1].
Where I live in Oregon tipped workers get the full minimum wage of $15.45/hr in the Portland metro area. There is also $14.20/hr for the rest of the state, and $13.20/hr for some rural counties. Some other states also require tipped workers to be paid the full minimum wage, but not that many.
1. https://www.dol.gov/agencies/whd/state/minimum-wage/tipped
If it is a good case, a lawyer will take it "on contingency," meaning the lawyer gets paid only if his client wins.
That isn’t true in all states, in California, Oregon, and Washington (and MT, NV, MN, AK) they make at least minimum wage, tips are always on top of that, no tip credits are allowed.
But in a country and a field where unions and strikes don't seem very common, this is difficult.