Where do you work? How hard is it to find a new job? How likely are they to fire you if you stand up to them?
The best case scenario would be that you and the entire staff stand up to HR and say that you were all led to believe this was permitted policy, and that if they’re going to declare retroactively that it isn’t, you all want a compensation raise because you considered this a job benefit.
Obviously you shouldn’t do this, though, unless you feel like you’ve got a strong position and you’re not afraid to find a new job.
If you’re looking for the safest option, I’d go with lie and deny: deny having eaten what you ate. Deny having confessed. Deny that you even work there if you have to.
Don’t bother throwing your coworkers under the bus. This is very unlikely to change HR’s reaction. They will punish you the same either way, they just might punish others too. There’s no benefit to you, so either stand up and fight or deny deny deny and promise you’ll be good.



Fwiw, this was front page under the fold in today’s Sunday edition of the East Bay Times. I was pretty happy with the coverage.
Also, the above-the-fold story was about a 14 year old Gazan who was recovering well from 9 months of burn treatments in the US.