In the state of Alabama it is a misdemeanor offense to serve alcohol to minors.
It is punishable by up to one year in jail AND/ OR a fine of up to $1,000.
Keep in mind, it does sound like your wife may have a plausible legal defense -- she did in fact ask for an ID and look at it -- it sounds like she made an honest mistake and thought she read a 4 instead of a 7.
If AELA decides to pursue criminal charges, then I would advise your wife to hire an attorney to represent her because she may be able to get this case dismissed. Again, it sounds like she did in fact ask for an ID before serving the customer/ undercover officer, and made an honest mistake.
As far as whether she'll still be able to work-- yes, she can still work from a legal perspective. There's nothing in the law that penalizes or prohibits her from working in the same capacity.
Whether her boss or the establishment owner takes an issue with this is another story. Again, it was an easy mistake to make, and she did in fact ID the individual, so that is all something her boss would take into consideration.
If she has a good working relationship with her boss, and if they are at all reasonable, I don't think this would cause a problem with her job.
I hope that helps! If you'd like to speak more privately about her case over the phone, I'm available and would be happy to speak with you, so you can still click the link I sent earlier to get us connected for a phone call.
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