Work assignment methods and systems are provided that dynamically redistribute a percent allocation of contacts after an outage at a contact center. In general, a work assignment mechanism, upon receiving information that a contact center is removed from a system of available contact centers, dynamically recalculates a percentage allocation of each available contact center in the system. Subsequently received contacts are distributed among the available contact centers in accordance with the recalculated percentage allocation. When a contact center is returned to the system from an outage, the percentage allocation of contacts can be incrementally increased to the returning contact center.