The unemployed (short or long term) with no assets or family assistance are entitled to ComCare subsidies, which are designed specifically to stop people from falling into destitution:

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:

https://www.bbc.com/news/world-asia-26349689