From a loose count of those at the meeting, I'm assuming that Legare has 16 employees. 3.6 million per month in payroll means each employee makes about 225,000 yen per month on average. That's livable, but 112,500 yen per month sounds pretty absurd.
As much as I love the sense of romanticism in Ban's proposal, I really can't imagine every employee being on board with that.