[lotsofpulp]

> The biggest reason is that there has been almost no productivity gain for cleaning a hotel in the last 20-30 years. It takes same amount of time and effort. So why would the wages go up if productivity is not up?

Wages are a function of supply and demand. If the people cleaning hotels had better options, their wages would go up (or hotels would shut down, or ask people to clean their own room before they leave, etc.)