Hi MyBest Friend,

The labor department does a market survey and determines a minimum salary for each job post. So, if your salary was higher than the minimum salary 3 yrs ago, then may be it is still above the minimum salary. But if your salary is below the minimum salary now, the labor department will inform your employer that your salary is below the required amount. Then, it'll be up to your employer whether to lay you off, or increase your salary and go ahead with the H1B reinstatement application.

Good Luck