Select case on range name

An example workbook would help. Are they all Named Ranges referring to single cells, if so you need to loop through the Names not the cells

Maybe

Option Explicit
Sub VALIDATEINPUT()
    Dim Nm As Name

    For Each Nm In Names
        Select Case Nm.Name

        Case "EMP": If Range("EMP") = "" Then MsgBox ("You must enter an employee number at the top")
        Case "RES"
            If Range("RES") = "" Then
                MsgBox ("You must select a reason for the change request")
            ElseIf Range("RES") = "Other - Please specify" Then
                If Range("RESO") = "" Then
                    MsgBox ("You must enter a reason in the 'other reason' box")
                End If
            End If
        End If
'etc