refer these sites : Abu Dhabi eGovernment Gateway - Citizen - Home
Ministry of Labour <link updated to site home>
you may get the labour law information you are looking for........
For HR policies (not sure about Arab) and HR related documents you find it if you use the research option give above this site.....
5th May 2012 From India, Bangalore
6th May 2012 From Qatar, Doha
Some additional information for you..may be useful.
If you are looking for software tools to process leave, payroll, directly generate SIF Files (as per WPS regulations) after payroll processing, do final settlement etc.. you may try Greytip Online
Wishing the very best in Dubai
7th May 2012 From India, Bangalore