NALC conducted our annual audiograms on 11/6/18. I received notice on 11/20/18 that an employee had results of an STS. This employee had given 2 week notice, prior to the audiogram. EE last day worked was on 11/9/18. Since ee is no longer employed here MSHA informed that we would need to fill out this form but not need to go any further with anything else.