The Sun in the 6th house will show us a person who strives to do their work well. This is the house of service, daily duties, manifestation of care, as well as illnesses. A person with the Sun in the 6th house enjoys what they do at work. They may find interesting work and use a creative approach in their activities. They fit well into the structure. Since the 6th house is symbolically the house of Virgo, the person is able to submit, serve, and work well. They are excellent performers who can do the work perfectly, but the most important thing for them is to be needed at work. To be that cog in the big machine.
Most often, such people work in the sphere of service, maintenance - doctors, teachers, social workers, but not necessarily. They may become the head of a department or some unit.
With the Sun in the 6th house, there is often a weak connection with the father, no close emotional bond. They may not feel his support. In the family, the mother may be the main figure, or the father is constantly away at work, or on business trips, or the father is ill and requires care.