Sheffield Company set the following standard costs for manufacturing one unit of its product. The following information was provided.

Standard Labor Rate: $$15\mathrm{.}00$ per hour

Standard Labor Hours: $3$ hours per unit

During the month of June, the company produced $1,200$ units. The actual labor costs were as follows:

Actual Labor Hours: $2,000$ hours

Actual Labor Rate: $$16\mathrm{.}00$ per hour

Calculate the Total Labor Variance, Labor Rate Variance, and Labor Efficiency