it is your choice to go 
but if you don't go 
you can't leave your home
and if you leave your home
you will get fined.

are you still not going?
that is fine
you will just lose your job
'cause you can't leave your home.

you probably should go
but it's up to you
after all 
it is your choice. 

Calling something voluntary and then issuing threats, sanctions and penalties when one doesn’t comply is not voluntary.