如果你所在公司有比较完整的人事部，那一般他们会知道如果办理。当然，也有的公司是初次雇佣移民的，所以人事部不一定知道。下面是个Employment Verification Letter.sample例子。你大可以把这个sample给人事部，让他们把空格填好，然后用带有公司抬头的信纸打印出来就行了。而且这个文件也不需要原件。你把它扫描发回去给申请人，而申请人把它打印出来就行了。
*****************Employment Verification Letter Sample*********************
Month Date,Year
To whom it may concern,
RE: Confirmation of Employment
This letter is to confirm the employment of Mr. with X company. Mr. has been a full time employee at X company since (month) (date) , (year). His job title is (such such)
and his annual salary is US $xxxxxx. Please fell free to contact me at (xxx)xxx-xxxx should you have further inquiries.
Sincerely yours,
(Name)
(Title)
(Company Address)
********************************************************************
美国签证 US VISA