Full membership is available to Master Masons of good standing and Associate membership is available to non-riding Master Masons.

All full active members must own and ride a legally licensed motorcycle of at least 500cc, they must also hold a valid motorcycle licence and must comply with all laws governing the operation of the vehicle. (The minimum capacity rule does not apply to classic motorcycles).

A meeting of the officers of the Widows Sons will then examine the Masonic status of the candidate and if a favourable opinion is formed of his dedication and service to the brotherhood, he may be enrolled in the association.