Skilled Worker Program Application Guidelines 里面有提到以下文档，个人理解应该就是推荐信涵盖的内容了。
http://www.deewr.gov.au/Skills/P ... rtantDocuments.aspx
Verifiable statements from your employers to support all your employment as an apprentice/trainee and tradesperson. Where possible statements should be on company letterhead, signed by your employer or a person authorised by your employer (the name, position and contact details of the person making the statement must be clearly indicated) and must include the classification in which you were employed; details of the exact periods of employment; and a full and detailed description of the nature and content of your work along with the machines, tools and equipment used, as applicable.
10.1.
Employment: The apprenticeship cited must comprise of a period of acceptable formal training, directly related on-the-job training, and continuing directly related and relevant employment of not less than five years duration.
10.1.1.
Evidence of 12 months paid full-time employment in the nominated trade within the 24 months prior to lodging an application must also be provided.
10.2.
In addition, the employment must meet the following conditions:
10.2.1.
the apprentice completed on-the-job training under the direct supervision of a qualified tradesperson in the occupation or trade; and
10.2.2.
successful completion of the informal apprenticeship has resulted in the person being recognised by an acceptable employer as a fully qualified tradesperson.
10.3.
Formal training: The training cited must be formal, vocational training which:
10.3.1.
consists of not less than 900 hours of structured tuition;
10.3.2.
has been conducted within 2 years of the apprenticeship;
10.3.3.
is directly related to the occupation;
10.3.4.
has been accredited by an authorised governing body whose standards can be independently verified by TRA (e.g. government, military or recognised industrial party); and
10.3.5.
results in certification verifying completion of such training.