The labor efficiency variance is a calculation that shows how much more was spent on direct labor than expected, assuming the dollars per hour were as planned.
The numerical variance is often marked with an F if it's favorable (less labor was required) or with a U if it's unfavorable (more labor was required).
Of course, the favorable or unfavorable mark can be very misleading. Favorable isn't always good and unfavorable isn't always bad. For instance:
This is what you've been told: