Yes, your EP application can be rejected if there are certain requirements which aren’t met. Reasons for rejection can include a full quota (so there is no real reason to hire foreigners), incomplete application forms, records not being kept up to date, and failure to provide certified true copies of documents. If your salary does not meet the requirements, your application could be rejected too. If your skills may be locally sourced, your application could be rejected. Your employer also needs to submit a strong letter of justification indicating why they need to hire you. 

Your employer can submit an appeal if your application is rejected. The processing time for this appeal would depend on the circumstances and reason for the appeal.  

To minimise instances of rejection, it is highly recommended that you seek out experts like Paul Hype Page to help you with your application process. Employers should also provide a strong letter of justification emphasising why this foreign talent is needed.