Its a reference you get whilst you are working in a job, for example if you change departments or your boss retires you might request one from your boss to keep on file.
From dictionary.com
Ref-er-ence
noun, verb, -enced, -enc-ing.
–noun
1. An act or instance of referring.
2. A mention; allusion.
3. Something for which a name or designation stands;...
It refers to the time between one event, process, or period and another. Applied to actions, it means temporary or until further action can be decided. For elected offices, or other positions, it...
The Cenozoic Era.
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CE is often used as an abbreviation for Common Era: which is a supposedly non-contentious alternative to AD. The thinking goes that AD dating refers all dates to the...