Ok, so they have 15 days to come to a resolution/decision or it goes to panel. Which is discussed in Article 46.
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Now as you can see panels handle discharges and suspensions
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Now without having the rules and procedures can can not tell you how often they meet or if postponement is allowed.
For instance my area panels meet 1 week a month every month. So depending when the termination happens and how quickly they can meet. You could miss panel that month. Then in my area the company and the union both have 1 postponement. So you could easily be sitting for 2 months before going to panel. Then much longer if deadlocked and sent to arbitration.
Now with that said if people are waiting 3 or 4 months without going to panel then your local should be filing labor charges. I doubt the company is not having panels though. Local unions would refuse to show up to negotiations if discharges were not being heard because it would jeopardize their elected positions.