Gatekeepers and Referrals in Services
Management Science
Call center simulations: call center simulation modeling: methods, challenges, and opportunities
Proceedings of the 35th conference on Winter simulation: driving innovation
Call-Routing Schemes for Call-Center Outsourcing
Manufacturing & Service Operations Management
Quality prediction for reconfigurable manufacturing systems via human error modelling
International Journal of Computer Integrated Manufacturing
Division of Labor in Medical Office Practices
Manufacturing & Service Operations Management
A measure of cross-training benefit versus job skill specialization
Computers and Industrial Engineering
Routing to Manage Resolution and Waiting Time in Call Centers with Heterogeneous Servers
Manufacturing & Service Operations Management
Characterizing the performance of process flexibility structures
Operations Research Letters
The Learning Curve of IT Knowledge Workers in a Computing Call Center
Information Systems Research
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Does cross-training workers allow a firm to achieve economies of scale when there is variability in the content of work, or does it create a workforce that performs many tasks with consistent mediocrity? To address this question we integrate a model of a stochastic service system with models for tenure- and experience-based service quality. When examined in isolation, the service system model confirms a well-known "rule of thumb" from the queueing literature: Flexible or cross-trained servers provide more throughput with fewer workers than specialized servers. However, in the integrated model these economies of scale are tempered by a loss in quality. Given multiple tasks, flexible workers may not gain sufficient experience to provide high-quality service to any one customer, and what is gained in efficiency is lost in quality.Through a series of numerical experiments we find that low utilization in an all-specialist system can also reduce quality, and therefore the optimal staff mix combines flexible and specialized workers. We also investigate when the performance of the system is sensitive to the staffing configuration choice. For small systems with high learning rates, the optimal staff mix provides significant benefits over either extreme case (a completely specialized or completely flexible workforce). If the system is small and the rate of learning is slow, flexible servers are preferred. For large systems with high learning rates, the model leans toward specialized servers. In a final set of experiments, the model analyzes the design options for an actual call center.