11 THE ACTIVITY-BASED COSTING APPROACH DE-THAN ONE ACTIVITY, SOME WA...

8-11 The activity-based costing approach de-

than one activity, some way must be found to

estimate how much time they spend on each. The

scribed in the chapter is probably unacceptable

most practical approach is often to ask employees

for external financial reports for two reasons.

what percentage of time they spend on each ac-

First, activity-based product costs, as described in

tivity. It is also possible to ask people to keep

this chapter, exclude some manufacturing costs

and include some nonmanufacturing costs. Sec-

records of how they spend their time or observe

ond, the first-stage allocations are based on in-

them as they perform their tasks, but both of

terviews rather than verifiable, objective data.

these alternatives are costly and it is not obvious

that the data would be any better. People who