Another option is splitting shifts. For example, the worker can come in, work for four hours, then come back two hours later for another four hours. The impact of this option in scheduling is essentially similar to that of changing lot size in production. When workers start working, they have to log in, change uniforms, and probably get necessary information from workers in the previous shift. This preparation can be considered as the “setup cost” in a production scenario. Splitting shifts is like having smaller production lot sizes and thus more preparation (more setups). This problem can be solved by linear programming methods described in the Nanda and Browne bibliographic reference.