Oh come on. Those are 3 wildly different use-cases. Your employer is providing you a perk as an incentive to keep you at the company longer hours. They provide a complementary meal, they log things like how many people eat, how often, what times, etc, to improve the service.

Your government is mandatory, your employer is voluntary.

Your insurance company would likely offer you a discount if you provided them this information. Again, on a voluntary basis. In general when something like this is required by an insurance company it's heavily regulated.