Typically the process at the clinic will be complete by the end of the day you attend if you do not have any health issues. It takes one to two weeks for a Migrant Health Certificate to be processed by the Migrant Health Team. However if you have health issues or the Government Migrant Health Doctors has queries this can extend the process considerably depending upon the complexity of the problem. The most common cause of delay are; Failure to provide ALL the appropriate documents (see below) is the most common Failure to provide acceptable proof of childhood vaccines in a format that is acceptable to government is also a very common reason for denial. High blood pressure An abnormal heart tracing (EKG/ECG) leading to a cardiology consultation. Other health issues.