Welfare reforms are changes in the operation of a given welfare system aimed at improving the efficiency, equity and administration of government assistance programs. Reform programs may have a various aims, sometimes the focus is on reducing the number of individuals receiving government assistance and welfare system expenditure, at other times reforms may aim to ensure greater fairness, effectiveness and allocation of welfare for those in need. Classical liberals, libertarians, and conservatives generally argue that welfare and other tax-funded services reduce incentives to work, exacerbate the free-rider problem, and intensify poverty. On the other hand social democrats and socialists generally criticize welfare reforms that minimize the public safety net and strengthens the capitalist economic system. Welfare reform is constantly debated because of the varying opinions on a government's need to balance providing guaranteed welfare benefits and promoting self-sufficiency.