The Atmakaraka i.e. the highest degree planet in your horoscope (rahu,ketu excluded) and the amatyakaraka , the planet with second highest degree play an important role in determining what an individual will do for a living. Following are the different careers signified by planets. Conjuction with rahu/ketu affects accordingly.
Sun: King, Ruler, Head of organisations, Minister, Secretary, Power
Moon: Public, Public represetative Correspondent, Politician, Minister
Mars: Police, Army, Scientist, Industries related to fire, Building construction, Terrorism
Mercury: Teacher, Principal, Lawyer, Editor, Business, Artist, Player/Sportsman
Jupiter: Pandit/Priest, Philosopher, Preacher, Judge, Finance Officer, Healer, Money transactions
Venus: Cinema, Music, Art, Advertisement, Modelling, Beauty Products, Car, Computer, Refrigerator Production/ Distribution, Government Representative.
Saturn: Labor, Service, Job, Iron industry, Currency printing, Arms and explosive production
Rahu: Healer for Poisoning (snake & others), Bodyguard, Guard, Thief/Murderer (on being malefic)
Ketu: Servant, Labor, Driver, Worker, Idol Construction, Liberation
NOTE: In the determination of career, the planets which are placed fourth, fifth and tenth from the karkansha (sign in which the atmakaraka in placed in the navmansha chart)