It's up to the individual who clogs the toilet to unclog it.
It's NOT the janitor's job, it's not the job of the young people in the office, nor the new guy...and while it may indeed be caused by an issue that requires a plumber, it still comes down to whoever clogs the fucking toilet needs to grab the plunger and un-clog the dammed thing.
At home, sure, but thats not corporate mentality.
For example, hypothetically speaking, my pay rate is $100.00/hour. From a boss' point of view, it makes no sense to pay me $100/hour to unclog toilets because:
A, While unclogging toilets, I'm not doing the real work that I'm paid $100/hour to do
B. It shouldn't cost 100/hour to unclog toilets
C. The janitors are lazy
D. There's a bigger problem if the toilets are constantly clogging.