I don't know of any airline that actually adds you to the employee list prior to day one of indoc/training. When they "hire" you, it's usually a conditional job offer pending you show up to day one at which point you join the seniority list. By the way, I am AGR and just dropped my retirement papers yesterday with my curtailment worksheet attached. But I'm already on mil leave from an airline so I'm not worried about timing my exit.