Not true, its very easy to make a bad impact. Your work will almost always generate profit and capital for the company. On the other hand, making a good impact is much harder.
The capitalist mode of production relies on extracting the surplus value of the worker. Simply put, people have jobs because the company makes more money with the worker than without the worker. I have never heard any economist, heterodox or not, claim otherwise.
Let alone my experience, I have NEVER seen an argument supporting this conclusion. If anything, it's the opposite.