Methods and apparatus for processing of communications in a call center based on variable rest period determinations

A call center is configured to determine variable rest periods for one or more agents, based at least in part on factors such as call center service state and agent occupancy. The call center service states may include a number of designated service states associated with a particular skill or type of communication supported by one or more agents of the call center. A particular one of the states represents a branded service level, while other states represent over-service and under-service conditions. The rest period determined for one or more of the agents can be used to implement features such as many-to-many work assignment, just-in-time (JIT) delivery of work, next opportunity for service (NOS) indicators, thereby facilitating the processing of communications in the call center.