You don't get a salary because this organizatian is an NGO.
THEN WHAT IS AN NGO?!
A non-governmental organization (NGO) is a non-profit, citizen-based group that functions independently of government. NGOs, sometimes called civil societies, are organized on community, national and international levels to serve specific social or political purposes, and are cooperative, rather than commercial, in nature.
Although there are also disadvantages, there are so many NGO which are taking most of sharing 100 % of donation, some NGOs are doing fraud advertisement for the donation, NGOs interfere in Government issues.
Advantages include: generally smaller and thus more responsive to the needs of local communities than the kinds of large scale development projects undertaken in the days of Modernisation Theory. There is no political agenda as is often the case with government aid, and thus aid is not ‘tied aid’ – it is freely given. NGOs can provide a more continuous supply of aid compared to governments, which can be effected by elections. NGOs are more likely to help the poorest of the poor, unlike TNCs who will only invest in slightly more developed countries that are more stable because these provide a better prospect for profit. NGOs provide one of the most critical voices of government aid agendas and provide a broader range of knowledge about life in developing countries compared to Official Aid Agencies