pay grade       
noun [ C ] uk/ˈpeɪ ˌɡreɪd/ us/ˈpeɪ ˌɡreɪd/
 薪金等级,工资等级
the range of amounts that someone can be paid when they are at a particular level in an organization or job
  He now works in another regional office at a pay grade several notches below his former pay grade. 现在他在另一个地区办事处工作,工资级别比以前低几级。 
 She was moved up to a managerial pay grade.  她升职到管理级别。 
 - More examples
 - The board could have recommended action such as a letter of reprimand, a reduction in pay grade, a fine, a job transfer or dismissal.
 - State troopers typically reach the top of their pay grade within six years, according to the Highway Patrol.
 - Six months ago, Hayden got rid of all regulations requiring employees to spend two years at one pay grade before they get promoted to the next.
 - He ummed and ahhed and eventually said that the question was above his paygrade.
 - It's above my pay grade to make decisions on whether he should have done that.
 
Idiom   
be above someone's pay gradeidiom  超出(某人的)职责范围
to be something that a person does not have enough knowledge or authority to do
  She declined to comment on the controversial tape, saying "That's above my pay grade." 她拒绝对这个有争议的录音带发表任何评论,说:“这超出了我的职责范围。”