I had to rat on someone for the first time ever

I agree with SCredneck,
Since he is a federal employee, that constitutes falsifying a federal document which is a felony.
I quite frankly, would take him aside, place a copy of the evidence in his hands, explain to him how serious his crime is and tell him he has 24 hours to resign, OR the package gets delivered to the nearest Federal prosecutor.
Thats just me
Andrew


But if he's union, like most government employees, how for do you think that's going to go?

The threats of prosecution will be pulled off the table during the disciplinary hearing with the union's attorney/rep being present, his past write-ups and evaluations will be taken into account, and the union will negotiate a deal which will allow him to keep his job in the same manner. He might lose a week's paid vacation. Most likely the only action that will be taken will be a couple of threats of "we'll be watching you" and a lean on the union of "if he does this again, then we'll..."