Final answer:
Job Expansion refers to the addition of more tasks of a similar skill level to an employee's responsibilities, as opposed to enriching or fundamentally changing the job's structure (Job Enrichment or Job Redesign, respectively), or rotating employees (Job Rotation).
Step-by-step explanation:
Assigning workers additional tasks at the same level of responsibility to increase the number of tasks they have to perform is known as Job Expansion. This concept refers to the broadening of a job's scope by adding more tasks of similar skill level to the worker's responsibilities. This should not be confused with job enrichment, which typically involves adding tasks that provide greater responsibility or opportunity for personal growth, or job redesign, where the job is structurally changed. Job rotation is another related concept where employees are moved between different jobs to increase variety and motivation but not necessarily the number of tasks.
In Business studies, understanding workforce management concepts such as job expansion is important as it plays a role in organizational design and employee motivation.