Panache Clothiers is a small company that manufactures tall-mens suits. The company has used a standard cost accounting system. In May 2012, 11,200 suits were produced. The following standard and actual cost data applied to the month of May when normal capacity was 14,000 direct labor hours. All materials purchased were used.

Cost Element		Standard (per unit)		Actual
Direct materials		8 yards at $4.30 per yard		$371,050 for 90,500 yards ($4.10 per yard)
Direct labor		1.2 hours at $13.50 per hour		$201,630 for 14,300 hours ($14.10 per hour)
Overhead		1.2 hours at $6.00 per hour (fixed $3.50; variable $2.50)		$49,000 fixed overhead $37,000 variable overhead

Overhead is applied on the basis of direct labor hours. At normal capacity, budgeted fixed overhead costs were $49,000, and budgeted variable overhead was $35,000. Which of the materials and labor variances should be investigated if management considers a variance of more than 4% from standard to be significant?