The position of Mercury in tenth house of annual chart indicates success after hard work. In spite of facing hurdles in all works one will keep on going on the path of progress. High official will be supportive. The native will be able to accomplish all work with his reasoning powers and sweet language. Contacts with some political leader will bring name, fame and abundance of wealth for the native. Native will be capable to get his works done by flattery. Seeking advice with the older family members will be beneficial.
If Mercury is either aspected or conjuncted with malefic planets, same Mercury will become inauspicious and increase mental tension. Financial insecurity, social defame and sudden disputes will be faced. Your progeny especially son will face obstacles either in education or career and earning money.
To ward off the malefic effects of afflicted Mercury sitting in tenth house, one must perform some remedial & precautionary measures.