Dear friend...
your employer was suppose to gave you the Appl. Number, provided he should apply atleast to get that number...once he applied he will have a 5 digit number...you cann track the applications status on the link below

http://www.mlsa.gov.qa/MLSAServices/Laborservices/LbrReqInfo.aspx

if u have any doubt kindly call me..5757212
regards
sajid