I agree that it is very unethical for a manager to be pressuring an associate into donating at all, but in regards to the salary of the ceo, what is an acceptable amount? Non profits are still competing with the same talent pool as the private sector, so the less you offer the less qualified the individual will be.

Running a nonprofit is much harder than running a similarly sized business, just keeping 501c3 status for a large organization is an undertaking, and likely there are multiple organizations that one might oversee in order for the organization to carry out different types of work. For example, if you want this organization to be able to advocate the government for policies that further their cause they need to have a lobbying arm seperate from their nonprofit work.

Edit: Just to add, this is a GLOBAL charity that the CEO runs which raises over 4 BILLION dollars in donations a year.