Direct Labour Efficiency Variances
It is the difference between the standard hours allowed for the actual production achieved and the hours actually worked, all valued at THE standard labour rate. Using an equation, this can be shown as given:
Direct labour Efficiency Variance = (actual labour hours x standard rate) - (standard hour hours x standard rate)
(AHrs x SR) - (SHrs x SR)
Factoring SR out of the equation we obtain
Direct Labour efficiency variance = SR (AHrs - SHrs).
Therefore the direct labour efficiency variance arises because of the actual hours utilized in production varying from the standard hours expected to have been utilized.