I ordered 25 chickens and got 30. I don't find them to be a lot of work, but I designed around minimizing work. Most of the work was due to brooding that many at the same time. But, now that they are out in the coop, it is pretty easy for me.
1) Coop 16x12 deep litter over dirt floor.
2) They will have 500sqft fenced run/pasture once I get it built. Currently, we let them out to free range whenever we can.
3) Their feeder is home made with a hopper that holds a little more than a 50# bag of feed.
4) The waterer is 7 gallons. I am thinking of switching to a nipple watering system.
The result. The work to take care of these is:
1) Most days: Open door to free range, close at night.
2) Daily collect eggs.
3) Every 3 days fill waterer.
4) Weekly dump bag of feed in hopper.
5) Weekly scatter 1/4 bag of pine shavings, stir up litter.
6) Every two weeks go to feed store and buy:
a) Two bags of feed.
b) Egg cartons
c) Every other trip Pine Shavings.
d) Oyster shell, grit, treats as needed.
7) When need fertilizer shovel litter out of coop.
8) Once per year shovel out a lot of litter and fertilize everything.
That is ongoing work. Of course you have to build the coop and run, but that is a one time.
I am not counting fun, like throwing out BOSS when I feel like it.