Mercury in the 10th house brings speech and documents into the professional field: career, status, bosses, public decisions, reputation, business negotiations, goals, and reporting become the main information hub. The period requires speaking in a way that words can withstand the test of position and deadlines.
This is a time for presentations, interviews, business letters, strategy, public statements, task formalization, and discussion of duties. Mercury here looks up the hierarchy: whom to report to, what has been promised, and which result can be measured.

