adjective. habitually working diligently and for long hours.

adjective. Of a person, taking their work seriously and doing it well and rapidly.

adjective. characterized by hard work and perseverance

"While Hillary likes to break people into groups by sex and racial prejudice, ( "hardworking" is not limited to the hills of Kentucky and West Virginia) the fear group is composed of those who, for lack of thought or lack of care, don't know what change might mean."

diligent  

dependable  diligent  enterprising  high-minded  industrious  

ardent  assiduous  diligent  drudging  energetic