The Women's PROBUS Club of Alliston was formed on June 1, 2004.

PROBUS is the association of retired and semi-retired persons who join together in autonomous Clubs throughout the world. The word PROBUS is an abbreviation of the words PROfessional and BUSiness, but membership is not restricted to these two groups. It also embraces former executives of government and other organizations, and, in fact, anyone who has had some measure of responsibility in any field of endeavour.

Past membership in Rotary, or any service Club, is not a requirement for potential members of PROBUS. Some PROBUS members are members, or past members, of Rotary or other service Clubs.
There is no restriction on the number of members from any one vocation.

There is no compulsion to attend any number of meetings.
PROBUS members may be active members of any other organization, and many are.

Membership Fees are reasonable and unlikely to exceed $50 per year. Fees cover meeting room charges, refreshments, insurance and speaker honorariums and are subject to change to meet these charges. PROBUS lapel pins and name badges for meetings and functions are supplied by the Club for a one-time nominal fee.