The Worshipful Master of a Masonic Lodge is the highest ranking of all Lodge Officers which a Lodge may elect.
His Jewel is the Square, which is a stonemason's tool to ascertain true and correct angles of the cut and smoothed stone...thus his Jewel symbolizes virtue.
The Worshipful Master sits in the East of the Lodge room (symbolic of the Rising Sun in the East) and directs all of the business of the Lodge. Note: Even if the building faces a different direction, the Master is said to be "in the East". He also presides over ritual and ceremonies.
His position is similar to a President of any other organization. As Master, his word is final over any and all actions pertaining to his Lodge.
The Worshipful Master is responsible for every single thing within his lodge during his year as Master. He is ultimately responsible for every other lodge officer and their duties, every lodge committee, ritual and degree work, Masonic education, social functions, fundraisers, District and Grand Lodge liaison, Trestle Board communication, etc.
All eyes are upon the Master. If lodge functions go smoothly, it is the Master who takes the credit. If lodge functions go awry, it is the Master who bears the blame. Therefore, the Master wears many hats.
It is his duty to preside over business meetings, the conferral of degrees, and delegation of duties to all other Lodge Officers.
While Freemasons call the Master, "Worshipful Master", they do not, as some people may erroneously believe, actually worship him. "Worshipful" is an honorary title which shows respect for his position. In France, the word "Worshipful" is replaced with the word "Venerable".