“What do you call a person who is happy on Monday?”/“Retired.”

A retirement riddle has been printed on several images:
 
Q: What do you call a person who is happy on Monday?
A: Retired.
   
The saying was posted on Twitter on September 20, 2014.
   
         
Twitter
RudeNCrude‏
@rudencrude
@luvzgambit Happy Monday? Who’s happy on a Monday unless you’re retired or rich?
6:12 AM - 25 Jan 2010
 
Twitter
Kushagr Agarwal‏
@kushagragarwal
What do you call someone who is happy on a Monday ..... Retired
#OfficeOffice
11:11 PM - 30 Sep 2014
 
Twitter
Eva Willis‏
@EvaTwits
What do you call a person who is happy on Monday?
Retired.
5:23 PM - 18 Sep 2016
 
Twitter
MaroneyAutos‏
@MaroneyAutos
Q. What do you call a person who is happy on Monday morning?
A. Retired http://fb.me/1pjI9kySF
5:48 AM - 3 Oct 2016
 
Twitter
Alan S Harrell‏
@ashtexas
What do you call a person who is happy on Monday? . . . Retired.
7:16 AM - 3 Oct 2016
 
Me.Me
WHAT DO YOU CALL A PERSON WHO IS HAPPY ON MONDAY? RETIRED MEME
MEMES MONDAYS HAPPY MONDAY HAPPINESS 🤖 PERSONAL WHO PERSONALITY WHAT DO YOU PERSONABLE ONS RETIREMENT RETIRED
FOUND @ 1116 LIKES ON 2016-11-07 18:41:23 BY ME.ME
SOURCE: FACEBOOK
 
14 May 2017, Sunday Independent (Dublin, Ireland) “I don’t like Mondays, but I know why” by Eleanor Goggin, pg. 4:
The question goes; “What do you call a person who is happy on a Monday?” And the answer is, “Retired”. And that was the situation with me until recently.
   
The Jackson County Times-Journal (Jackson, OH)
Round the Town with Karen Wyant
Jun 12, 2017
(...)
What do you call person who is happy on Monday? Retired!