I checked couple of episodes and with a help of Futurama timeline I provide you this list of Hermes' bureaucracy grades:
Limbo career
-2980~2980-2990 in Mom's Friendly Robot Company as inspector #5 in Tijuana
(although records are mysteriously disappeared )Begins to work as a bureaucrat of Planet Express.
36 ~2990-3002
38 3002
37 3002-3005
Unemployed for 2 years.
Back to Planet Express with promoted grade.
34 3007
-3010Demoted back to 36 at some point in 3007-3010
36 3010-
There might be mistakes and inaccuracies...
You may now talk about bureaucrats and their mighty grades, while I'm still in line to wait my birth certificate.