Jiambalvo Managerial Accounting
Labor Rate Variance
= (AR – SR) AH
Labor Efficiency Variance
Controllable Overhead Variance
= Actual overhead – Flexible budget level of overhead for actual production
c. Possible Causes of Variances
Unfavorable Material Price Variance: Market prices of materials were higher
than expected. Or, possibly, the company increased the quality of materials
and paid a higher price (but standards were not revised).
Unfavorable Material Quantity Variance: More material was used because of
unskilled labor, mishandling, accidents or processing defects.