如题如题

国内的工作证明 除了雇主信，是需要完税证明还是纳税清单做补充材料？谢谢

哪些是essential duties 这个NOC里没有提及

For EE application, the requirement of work experience mentioned that the applicant must have performed a substantial number of the main duties, including all of the essential duties. How to understand "substantial" and how can I know which ones are essential?

我自己翻译也行吧

除了雇主信，我还准备提交税单。税单自己翻译成英文可以吗？还是必须找公证？