How many of each type of worker should AAD hire?
Compare the old schedule that includes overtime on weekends for the regular workers to the new schedule. How much is the company saving?
If the company could find only ten qualified part-time workers and six new hires, what would be the configuration and cost?
In Indiana where AAD is located, the company has access to a good labor force, and business is growing. The employees work on Saturdays and Sundays to get the jobs finished. Dashiell is planning to start an extra work schedule to accommodate this new increase in business.
Roger worries about quality, while Dashiell is concerned about the cost of each hour of time for each worker and the efficiency of the whole operation. When one of his employees cannot come to work for a day, it causes scheduling problems. Sometimes, they try to find another worker with the same skills and reassign that worker to try and complete the missing employee's work for the day, but it is difficult to replace skilled workers on short notice and expect all the work to get completed. Usually some work has to wait until the following day. When the absent worker returns the next day, he complains that his work was done by someone else and that the job was inferior to what he could have done. This 'posturing' contributes to low morale and inefficiency because it wastes time. Overtime is costly and yet waiting is a delay that can effectively stop the entire manufacturing process.
The 30 regular workers are paid an average of $18/hour, with Saturdays paid at time and a half pay and Sundays at double time. As the required output increases, it is estimated that the average week will soon require about 480 hours of overtime, the equivalent of two weekend days for the whole workforce. Some regular workers are working 16 hours overtime (at time and a half) on Saturday and double time on Sunday, an unacceptably expensive approach.
Instead of continuing to work the regular workforce all week and then paying them overtime as well, Dashiell is considering adding either part-time or permanent workers or a combination of the two. Part time workers would be paid $9/hour and permanent new hires would start at $12/hour. Either type of worker can be trained quickly to perform riveting and light assembly.
There are the following limitations on the application of this new labor:
• Part-time workers at AAD customarily work 20 hours or less per week. Fifteen qualified people are either already working or have been identified, but additional candidates are scarce.
• Only ten prospective new hires are available.
In addition, there are the following potential limitations as well:
• Machine availability when two people need to use the same machine
• JIT parts
• Resource skills; workers with multiple skills
• Market opportunity
The types of worker which should AAD be hired. The ten qualified part-time workers and six new hires are determined.
Currently: employees are working Monday to Friday, 8 hours daily. No-one works Saturday and Sunday.
Proposed: employees should be scheduled to work 4 days per week - 10 hour shifts - in a six day work week (closed on Sundays). Employees have two consecutive days off (excluding Sunday).
Forecasted service calls for the next several weeks are estimated to be:
Day of the Week Mon Tues Wed Thur Fri Sat Total
No. of Requests 29 25 19 30 33 40 176
Each service request is expected to average 2 hours of service time. The company wants to plan work shifts to approximately match the requests for service, but is concerned about how this will affect the utilization of personnel time, group morale and time required to perform customer service.
1. What is the minimum number of service personnel required?
2. Use a work shift heuristic procedure to develop work shift schedules for the service personnel. Work shift heuristic rule: choose 2 consecutive days with least total number of work shifts required. In the case of ties, arbitrarily select a pair and continue.
3. How much slack per week is present in the work shift schedules?
4. What ways could be used to reduce the amount of slack in your work shift schedules?
5. What factors should be considered in changes in work schedules such as the one under consideration? Which of these factors are most important? Can you suggest how one should go about making the schedule changes being considered?View Full Posting Details