Hi My friend,
Sorry for late reply as i don't have any experience in this case but i think you should discuss this with your consultant before calling ircc as consultant's have many different ways to reach to ircc in good way which don't let any negative point on your profile. Because i think you took off in this case ircc will question you about your leave if the leave was unofficial and make they provide you 1 or 2 year work permit.
So, my suggestion is this that you should first contact good consultant.
All the Best, hope you will receive your work permit