“I was fired from the keyboard factory today. I wasn’t putting in enough shifts”

There is a pun about work “shifts.” “I got fired for putting in extra shifts at work. It’s what you get for working in a keyboard factory” was posted on Twitter on March 24, 2011.
   
“I was fired from the keyboard factory today. I wasn’t putting in enough shifts” was posted on Reddit—Jokes on October 5, 2017.
 
     
Twitter
Sebas‏
@OhLookBirdies
I got fired for putting in extra shifts at work. It’s what you get for working in a keyboard factory.
3:55 AM - 24 Mar 2011
 
Twitter
Dj NorX‏
@DjNorX
The perks of working in a keyboard factory.
Extra shifts.
9:00 AM - 19 Aug 2011
 
Twitter
Ian‏
@KipchirchirIan
Why it sucks working in keyboard factory…
Extra Shifts!!
4:48 AM - 20 Aug 2011
     
Twitter
Mustafa Aziz Khalifa‏
@mazizkhalifa
The perks of working in a keyboard factory.
Extra shifts.
More control aswell.
5:30 PM - 3 May 2013
 
Twitter
Brandy Mc Fart‏
@Snikoggs
I can’t believe they sacked me from the Keyboard Factory after all the shifts that I put in.
3:13 AM - 21 Jan 2014
 
Reddit—Jokes
I was fired from the keyboard factory today.
submitted October 5, 2017 by RivyGucci
I wasn’t putting in enough shifts.