If you read what I posted you will see it is about not paying work for labor done. Not about letting laborers go once the work is done. The reason the work is done is moot.
But the article isn’t about not paying workers for work done.
It’s about cutting jobs.
Anyway, yes, it is wrong, sin, to not pay people for the work they’ve done.
But it’s completely up to the discretion of the employer about what jobs to do. If they want to or need to cut jobs, that’s their prerogative.