Serving jail time is unlikely. As for the job, a lot depends on if you have a union on the property. A plea bargain not involving jail or travel restrictions might allow the job to be kept.
I once flew with a pilot at NetJets who was accused of a sex offense against a 16 yr old girl. He was off work for 2 years but was kept on the payroll until the trial was over and he was found not guilty. Totally bogus case though. Near the end of the trial the prosecutor was trying to plea bargain down to a minor misdemeanor because their case had fallen apart. But the pilot still got stuck with a $200K bill for his defense.