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I am sorry to hear that. No, your boss handled the situation extremely poorly and exposed the company to potential liability. However, since you were fortunate that nothing happened, there's not really grounds for a legal claim at this point. However, if I were you I would submit a complaint about this in writing to HR so that if there is a problem in the future it can be addressed and be evidence for a future lawsuit if needed.
If you have no further questions a positive rating would be greatly appreciated