Hotel employee, first class, is German (12)
I believe the answer is:
receptionist
'hotel employee' is the definition.
(I've seen this before)
'first class is german' is the wordplay.
'first class' becomes 'reception' (I've seen this before).
'is german' becomes 'ist' ('is' in German).
'reception'+'ist'='RECEPTIONIST'
(Other definitions for receptionist that I've seen before include "Front-desk worker" , "Note its price (anag.)" , "One greeting visitors" , "Front-desk greeter" , "Meeter and greeter" .)