请问8老师和皮老师一个关于employment verification letter的问题

请问老师，前两天收到了pending已久的485的RFE,需要现在的公司一份employment verification letter。

可是跟公司HR谈过，公司怎么也不肯写跟“permanent"有关的字眼，还加上了“the employment is at will, either the employee or the company can terminate the relationship at any time."...

请问8老师，有没有什么其它的wording我可以用的，不写permanment的话：只写full-time的话可以么，比如说“the employment with company XXX is on a full-time basis, and it is at will, either the employee or the company can terminate the relationship at any time." 这样还可以么？

觉得公司太苛刻了，很焦急，还请老师指点！多谢老师！