Operators are able to withdraw from an accepted Op anytime before an Op starts. If they withdraw from an Op, their reliability score will be negatively affected. The negative effect increases as the start time gets closer, and eventually leads to a 1-star rating, which gives businesses the opportunity to avoid Operators with less-than-ideal work ethics.
Note: We recommend turning on your withdrawal notifications to ensure you don't miss when an Operator withdraws and you have time to react to backfill the withdrawal. How Do I Turn On/Off Email Notifications?