it is not a valid strategy for customizing a job for an employee. Customizing a job means creating or modifying a position that matches the skills and interests of the employee with the unmet needs of the employer1. Job duties that remove employees from their areas of expertise, and combine the tasks into one position to save employer money, do not meet this criterion. They may also result in lower quality of work, lower job satisfaction, and lower retention rates2.

Answer A is not correct, because it is a possible way to customize a job for an employee. Job duties not essential to the employer’s needs can be eliminated or reassigned to create a more focused and efficient position that suits the employee’s strengths and preferences1.

Answer C is not correct, because it is also a possible way to customize a job for an employee. Tasks that are not being done or done often enough, and negotiate a job description, can help to fill a gap in the employer’s operations and create a niche for the employee1.

Answer D is not correct, because it is another possible way to customize a job for an employee. Tasks for which the employer is paying overtime that could be combined into a position to save the company money, can help to reduce the employer’s costs and increase the employee’s productivity1. References: 

https://apse.org/wp-content/uploads/2019/08/CESP-Practice-Exam-8-2.pdf