“When I applied for shift work, I didn’t realize the ‘F’ was silent”

“Shift work” is sometimes called “shit work.” “Shift Work… The ‘f’ Is Silent” was posted on Twitter by Gage Findlater on February 25, 2013.
     
“When I applied for shift work, I didn’t realise the ‘F’ was silent” was posted on Twitter by Campoe Careers Nigeria | #CareersNG (and others) on January 14, 2019. (The joke probably originated in the Sickipedia website.)  “When I applied for shift work, I didn’t realise the ‘F’ was silent” was posted on Sickipedia on December 13, 2020.
   
   
Wikipedia: Shift plan
The shift plan, rota or roster (esp. British) is the central component of a shift schedule in shift work. The schedule includes considerations of shift overlap, shift change times and alignment with the clock, vacation, training, shift differentials, holidays, etc. The shift plan determines the sequence of work (W) and free (F) days within a shift system.
     
Twitter
Gage Findlater
@12Gage09
Shift Work… The “f” Is Silent
4:09 PM · Feb 25, 2013 from Middlesex, Ontario·Twitter Web Client
   
Twitter
Lantz Frost
@LANTZ_FROST
I totally get Shift Work now, the ‘f’ is silent.
5:31 PM · Jun 4, 2014·Twitter for Windows Phone
   
Twitter
Campoe Careers Nigeria | #CareersNG
@CampoeNGR
When I applied for shift work, I didn’t realise the"F” was silent.
5:20 AM · Jan 14, 2019·IFTTT
   
Twitter
Kids and life hacks
@guys_and
When I applied for shift work, I didn’t realise the"F” was silent.
5:41 AM · Jan 14, 2019·IFTTT
   
Twitter
Frustrated Desi
@OneMJoke
When I applied for shift work, I didn’t realise the"F” was silent.
6:31 AM · Jan 14, 2019·IFTTT
   
Sickipedia
When I applied for shift work, I didn’t realise the “F” was silent.
Joke by Renegade in Other - One Liner · December 13, 2020 11:11 PM
   
Twitter
Bob Kostic
@causticbob
When I applied for shift work, I didn’t realise the “F” was silent.
6:51 PM · Dec 13, 2020·Twitter Web App (Posted after the above.—ed.)