Is there compulsory insurance for workers in Singapore?

Here are the 3 types of compulsory insurance for employees in SG:

1. WICA Insurance: Compulsory for all manual workers regardless of salary amount. Also compulsory for all non-manual workers earning $2,600/month or less.
2. Foreign Worker Medical Insurance: Compulsory for all foreign workers on S-Pass and Work Permit.
3. Foreign Worker Security Bond: Compulsory for all non-Malaysian foreign workers on S-Pass and Work Permit.