It refers to the degree to which tasks in the organization are subdivided into separate jobs.
In work specialization...
involves repetetive performance of a few skills
be viewed as a means to make the most efficient use of employee's skills
some task requires highly developed skills
can be performed by the untrained
increases employee's skills through repetition
Division of labor
makes efficient use of employees skills
between-job downtime increases productivity
training is more efficient
allows the use of specialized equipment