Reference: 11-11
the Clark Company Makes a Single Product and Uses

Reference: 11-11
The Clark Company makes a single product and uses standard costing. Variable overhead is assigned to production on the basis of direct labour hours. Some data concerning this product for the month of May follow: $$\begin{array} { | l | l | l | } \hline \text { Labour rate variance: } & \$ 7,000 & \mathrm {~F} \\\hline \text { Labour efficiency variance: } & \$ 12,000 & \mathrm {~F} \\\hline \text { Variable overhead efficiency variance: } & \$ 4,000 & \mathrm {~F} \\\hline \text { Number of units produced: } & 10,000 & \\\hline \text { Standard labour rate per direct labour hour: } & \$ 12 & \\\hline \text { Standard variable overhead rate per direct labour hour: } & \$ 4 & \\\hline \text { Actual labour hours used: } & 14,000 & \\\hline \text { Actual variable manufacturing overhead costs: } & \$ 58,290 & \\\hline\end{array}$$
-The overhead spending variance and the overhead efficiency variance are useful only if variable overhead really should be proportional to the activity measure that is being used in the flexible budget.