As far as i know that at this stage they don't contact the employers, they look into your papers only.

__________________
Visa Type : 175 CSL (SAP Specialist) - High Risk
--------------------------
ACS Applied: 24/9/2008
ACS Ack: 24/9/2008
ACS Approved: 11/11/2008
IELTS - Passed (6.5 Overall): 10/6/2009
Application Applied: 20/6/2009
Processing Further: 18/9/2009
CO Allocated: 11/11/2009
Documents Requested: 11/11/2009
MED Sent by DHL: 17/11/2009
MED Delivered: 20/11/2009
MED Letter , PCC & F80 Sent: 24/11/2009
Medicals Referred: 03/12/2009
Medicals Finalized: 10/12/2009
Visa Granted: 21/1/2010