Singapore has no minimum wage. If its underclass were not destitute, I would think that would be rather surprising.
When the bus drivers tried to strike against explicitly racist pay policies they imprisoned and beat them: https://www.wsj.com/articles/BL-SEAB-2274
They don't substitute. Unions are basically illegal.
There are people earning ridiculously low wages.
Singapore, of course, is nothing like this.
https://msf.gov.sg/Comcare/Pages/Short-to-Medium-Term-Assist...
https://msf.gov.sg/Comcare/Pages/Public-Assistance.aspx
Here's the BBC on what this looks like in practice: