815 form 和 resum都好说，
这个 Evidence of employment，其中我claim 分数的工作经验为海外8+年以上，但Evidence of employmen本人已经提供了：推荐信（纯英文+领导签字盖章+公司抬头纸），完税证明（原件+翻译件），社保(原件+翻译件），工作证明（公司抬头纸盖章原件+翻译件），
请问，Co为啥还让我提供Evidence of employment？
邮件的REQUEST CHECKLIST AND DETAILS 原文如下：
● Evidence of employment
Please provide copies of both the originals and the translations of all documents
Evidence of employment
Provide evidence of your claimed period of employment prior to the date of invitation. Evidence can include, but are not limited to:
● employment references
● contracts
● pay slips
● tax returns
● group certificates
● superannuation information. Employment references should meet the following requirements:
● A reference should be on the official letterhead of the company providing the reference.
● The letterhead should indicate clearly the full address of the company and any phone numbers, fax numbers, emails and website addresses.
● The name and position of the person authorised to sign the reference should be typed or stamped below that person’s signature - a reference with only an illegible signature will not be accepted.
● The direct contact number of the person writing the reference should be included in the letter. ● The letter should indicate the exact period of employment, position(s) held including whether permanent or temporary, full or part time, the main five duties undertaken, and the salary earned - position(s) should not be described by generic title(s) (for example, research officer, public servant), but according to the nature of the duties undertaken (for example, research chemist, accounts clerk).