The relationship of the 1st house with 6th house and 7th house is the most important factor in determining whether the horoscope and divisional chart is better suited for business or service amongst other factors. Even if the 1st house and 6th house are working in tandem with each other a well placed 7th house planet with a strong 11th house might give person a strong business.
The 2nd house in the horoscope and divisional chart determine what type of people or relationship you have with your co-workers at your work place.
The 3rd house in the horoscope and divisional chart show what obstacles you might face in your daily work.
The 4th house of the horoscope and divisional chart determines what kind of environment you would working in. The nature of environment is judged by the lord of the 4th house, planets looking the 4th house and planets looking at the 4th lord.
The 5th house in the horoscope and divisional chart determines your position in the company ladder and your subordinates.
The 6th house represents what kind of work you will be doing.
The 7th house shows the business and work partnership you might have.
The 8th house shows difficulties and problems in career progression. A strong 8th house in this period might cause a change in job or career.
The 9th house shows how your clients or boss will relate to you i.e. the type of relationship you might have with them.
The 10th house as described earlier will determine the nature of job. This is most important to determine the type of profession from horoscope.
The 11th house shows gain and support you receive from external parties. This is a very strong house and in most cases it can turn anything negative to a super positive thing.
The 12th house will show travelling and relationship with foreign land in your work.