(note: definitions are quoted directly from the dictionary)

Social. 

Worker. 

Social. Of or relating to society or its organization. 

Social. Of or relating to rank and status in society. 

Worker. An employee. 

Worker. A person who works in a specified way. 

As a social worker, I am very familiar with theories of human development, among them the theories of ego development. I have known, or rather, I have learned, that humans in infancy are incapable of differentiating themselves from the people and events in their lives. For the first time in my life, I heard this described as an inability to compartmentalize. It is funny that the word ‘compartmentalize’ has been brought to my attention recently by a close friend. He may argue that we suffer by compartmentalizing our lives. Here is our work, and there is our family, and here you can play, and there you must be quiet, and here is me and there is a worm.  

Ego development. Human development. We come to this world, thinking beings, believing that we are somehow connected with every event and every person. But after a few days or months or years have passed, the idea of associating ourselves with this world, without distinction, becomes absurd.  Now I recognize, as a social worker should, that this disassociation is a protective factor. But then, I have never (in theory) been a proponent of disconnecting from what is emotionally difficult. Because we are alive. We are filled with life. We are foolish, us humans, but we are here, and we should fully experience that emotionally. At our best, we give word to the feelings of others, allow for a second of connectedness, wherein there is no disassociation from human to human or world to world or life to life. At our worst, the idea of associating ourselves from this world is something to grow out of. But we are food for worms. Where's the sense of ego in that? 

Social. Needing companionship. 

Social. Living together in organized communities, typically with different casts, as ants, bees, wasps, and termites do. 

Worker. A person who works hard. 

Worker. In social insects such as bees, wasps, ants, and termites, a neuter or undeveloped female that is a member of what is usually the most numerous caste and does the basic work of the colony.