at my school, we have two economics programs.
One gets you a BA and you basically have to take one math course (that is made easier than regular first year math. This is the one that most people do and the workload is not even close to comparable to science/eng. I don't know what they do. I don't know how you can learn economics with one math class. I do know that they can get through school with little work, kind of comparable to your typical business student.
The other one gets has a lot more math and you get a BSc (no idea why). They have to take 5 math courses, in order to take at least 3 econometric courses which are very math intensive. The rest of what they take are fairly easy though. From the people I know in this program, I would say the workload is close to that of a "softer" science degree like zoology, ecology, biology, etc. It's certainly not as much work as engineering, biochem, physics, microbio, etc...
However the most important point is you will always take out of a degree what you put in. If your goal is to put the bare minimum in, you will have an easy time doing that in economics. You will also graduate with a fairly common degree and not much else. At the same time, if you are interested in economics and put a lot of time into it you will learn a lot.
I don't know much about economics, but I would choose the one with more math If I wanted a job haha.