Yes, a majority of real estate agents do this as their full-time job. This is a hardcore sales position, so the more time you invest, the more opportunities you have to close deals.
40% of real estate agents with 0-2 years of experience are part-time agents. It’s not a bad thing to start out as a part-time agent since it can be a little slow starting out due to the fact that you’ll need to build up your network first.
There are brokers who will work with part-time agents and some who will not. When looking for a broker, it’s your responsibility to ask each broker if they will take on part-time agents. Keep in mind though, the income potential is a lot higher for full-time agents.