One of the significant disqualifiers is "misconduct."
The burden is on the employer to prove misconduct but once he submits evidence of misconduct you get the opportunity to refute it.
The following article explains the appeals process (if you are denied) but, more importantly, it begins an important discussion of misconduct on Page 9.
http://detr.state.nv.us/ESD%20Pages/...s_Handbook.pdf
Here's a case decision that addresses absences as misconduct, which might or might not be your issue, but is an interesting read.
http://www.worldlawdirect.com/articl...-benefits.html
You might be able to find other case decisions at Google Scholar. The link should take you to the Nevada page where you can search "unemployment misconduct."
http://scholar.google.com/scholar?hl=en&as_sdt=4,29
There will be plenty of results. Save the pages until you find out what kind the employer alleges and then find cases that apply.
Good luck.

