Linseyrca, Are you sure it was your manager? It may have been a crank call by someone who had his phone, or if the post office phone, one of your co-workers calling and acting like your manager. When you get called in for your investigative interview, if your manager takes it that far, first require a steward be present at the last minute before the meeting. If no steward is in your office, this delays your manager's plans again, until a steward can be scheduled to come. When you finally have the interview, make sure you specify you had no idea that your "real" manager would make such a request by phone, since you are a scheduled employee, and a real manager wouldn't go against the contract and change your schedule on anything but a reasonable amount of time, like the contract says. You, therefore, figured it was some co-worker playing a practical joke on you. You, of course, would never refuse an order from your manager that was contractual in nature, safe, and legal. If your (completely pissed off, by now) manager still places you on emergency placement removal, your grievance will be easily won, you will receive back pay for any time you may have missed, and your manager will look like the jerk he is. Sometimes you have to go through a little stress like this (emergency placement, grievance, back pay) before your manager respects, and shows respect to you and others. If you were contemplating resigning anyway what have you got to lose, except making your manager look like a fool on the way out, but I don't see you receiving any legitimate discipline whatsoever.