A disadvantage of work sampling is that

A) it tends to be less accurate, particularly when task times are short.
B) it observes several workers simultaneously.
C) it is more expensive than time-study methods.
D) it is more intrusive than time-study methods, and therefore generates more complaints.
E) observers do not usually require much training.

Work Sampling

A technique for estimating the proportion of time spent on various tasks within a job, based on random samples of worker activities.

Task Times

The duration required to complete specific tasks or operations, often analyzed for process improvement and labor planning.

Time-study Methods

Techniques used to determine the time required for a worker to perform each task of a job, aiming at increasing efficiency.