Hi,
I've noticed that CIC grants work experience points in the beginning of the month prior to the work anniversary.
I've open a thread about that before, and there were no consensus on what should be done. My conclusion was to wait and apply only AFTER my work anniversary, so the points are justified at the time of the application with enough evidence to support. There are other members who support my conclusion, although Asivad (who seems a respected member in this forum) thinks one should decline the invitation in cases like this. You should read and make your own decision though. My line of thought is that you should be responsible for the information that you enter in the system, not for how CIC uses that to calculate points. I also suspect that they give us a grace period by granting points earlier, so we don't miss a draw by a couple of days only (e.g. they draw on the 31st and we get additional points on the 1st), though this is just my thought.
In the case mentioned by Bhatall, he had 67 days of unpaid leave within the period, although still employed by the company. I'm not entirely sure, but my guess would be to enter as two distinct employment periods within the same company. So you would enter it twice, one up to the date your unpaid leave started. The 2nd one, will start on the day you return to work until today. That should account for it properly, and no one could accuse you of misrepresentation. I'd also mention this in the letter of explanation.