Attrition is the difference between the anticipated number of participants contracted for and the actual number of participants guaranteed for the conference.

A 20 % decrease in the "anticipated" number of participants is acceptable. Should the "guaranteed" number of participants drop below the acceptable limit, a 10 % attrition charge may be billed to the organization.

The charge will be applied as follows:
the difference between the anticipated # and the guaranteed #  x  daily lodging and food service rates  x  # of days  x  10% = attrition charge.

Organizations are encouraged to be as realistic as possible when determining the anticipated number of participants. Attendance at first-time conferences is usually lower than expected.