For employers with more than a handful of staff, the real risk is not a refusal. It is a permit that quietly expired while everybody was busy, and a worker who is then out of status through nobody's fault.
We keep the dates and write to you ninety, sixty and thirty days before each one, naming the worker, the document and what has to be started now. It is a flat annual figure per worker and it is the cheapest thing on our price list.
The reminder always names a person who has to act, because a reminder addressed to a company gets read by everybody and acted on by nobody.