Are too many people claiming too many benefits these days?

I've been temping in a debt management company for the last few weeks and processing people's financial statements. More than 70% of the people are on benefits, alot of them with 4+ children and on working tax credits / child benefits / incapacity benefits etc etc of up to �1800 per month which is more than what I earn!! Admittedly it is a debt management place so it's not representative of the population as a whole, but I was shocked at the volume of people and how much they were getting - any thoughts??