“I work in a paper factory, where my responsibilities are twofold”

A joke was submitted to the UK Pun Championships by Colin Chadwick in February 2016:
 
“I work in a paper factory, where my responsibilities are twofold.”
 
The pun is on “twofold,” which sounds like it means “to fold (paper).”
 
       
Mirror (London, UK)
42 of the best jokes from the UK Pun Championships
By Rod McPhee
19:11, 12 FEB 2016 UPDATED19:34, 12 FEB 2016
(...)
Colin Chadwick, 32, from Dublin @colinchadwick
I work in a paper factory, where my responsibilities are twofold.
 
Twitter
Hal Wollocombe
@halwoll
I work in a paper factory, where my responsibilities are twofold.
2:56 PM - 15 Feb 2016
     
Twitter 
We Are Alba
@wearealba
I work in a paper factory, where my responsibilities are twofold.
8:29 AM - 20 Aug 2016
 
Reddit—Dad Jokes
I work at a paper factory, where my responsibilities are twofold. (self.dadjokes)
submitted November 23, 2017 by cross_beaux
   
Twitter
ben
@starkricks
I work in a paper factory, where my responsibilities are twofold. #UKPunDay
8:27 AM - 12 Feb 2018 from Yorkshire and The Humber, England
 
Twitter
You Are Joking
@lahlahbean
#1pun
I work in a paper factory, where my responsibilities are twofold.
8:00 AM - 2 Jan 2019