Final answer:
The diary method is recommended for Jadex, as it is simple, cost-effective, and does not require in-depth training, making it suitable for analyzing tasks for new tablet computer production lines. While this method comes with questions regarding reliability, it provides a straightforward approach to understanding job tasks.
Step-by-step explanation:
The management of Jadex, a mobile phone manufacturer, is seeking to analyze jobs for tablet computer production using a technique that is simple and cost-effective. Given their desire to avoid expensive training, the diary method could be an appropriate job-analysis technique for them. This method involves employees recording their daily activities in a diary, providing insight into job tasks without requiring an extensively trained analyst. This technique reduces costs and is less obtrusive compared to methods like direct observation or structured interviews.
Certainly, accuracy and reliability must be considered when performing job analysis through the diary method. Research has shown that job analysis can vary in reliability, and descriptions provided by job incumbents may sometimes be less reliable. Hence, despite its practicality and low cost, the diary method must be implemented with a cautionary understanding of its limitations.