Yes I do work for a commission and work hard- I do not get paid by the hour or a salary- just the commission. My brokerage takes a split out of that commission and I get paid the balance.
If you really want an agent to be working hard on your behalf- finding you just the perfect property- then you should consider how they get paid. If they are not representing you- then technically they represent the seller.
This does differ somewhat from state to state and I am an agent in Minnesota.