Um, maybe it's not right if we use the word "Works", because this is blockahin. There are two scope discussed.
1. If you mean Steemit (Steemit.com site), then @ned and its employees are workers.
2. If you mean the Steem network, then there is the name "Witnesses" that works to keep the network functioning.
You can see the full list witness here:
Steemit inc is just like any other company out there. It has very departments and staffs working in each of the department. A company like steering inc will have several programmers among its staff, PROs, marketing personnel, graphic designers, maintenance team, etc.
The kind of people that are working for facebook, Twitter, whatsapp, etc, are the type of people working for steemit