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Autoscaling down to zero instances is a great way to avoid wasteful spending on worker services that often sit idle.
We've always allowed Heroku worker processes to scale to zero, and now you can do the same with your Render worker services. Render doesn't actually permit "scaling to zero"—instead you need to suspend a service.
Judoscale handles this for you behind the scenes. When scaling a worker service to zero instances, we're actually suspending it for you. And when we scale back up, we resume the service.

So go ahead and let those worker services scale to zero! You'll reduce your hosting bill, and Judoscale will make sure they scale back up when needed.