To be a reliable man

Esther 2:19-23
Mordecai was sitting at the king's gate, he found two of the king's offices who guarded the doorway became angry and conspired to assassinate King Xerxes. Mordecai told Queen Esther, who in turn reported it to the king, giving credit to Mordecai.
Esther's Jewish identity is kept secret: this is important for the plot as the story unfolds. So too is Mordecai's discovery of a plan to assassinate the king, which is written into the court records.
Why?
Mordecai is sitting at the King's gate, may be he is a some official under king for the favor of Esther is Queen. So Mordecai discovered two officials plan to assassinate the king.
Mordecai do his job honesty and reported the situation to protect the king. Even it is a little thing, but someday it will be repay by the Lord through our boss.
How?
Do the best in our job, be a reliable man to honor the name of God.