NEW YORK - July 8, 2010 - Amerikans focused on deeply discounted clothing that they needed in June amid escalating worries about jobs, resulting in sluggish sales for many retailers, according to early reports released Thursday.

June’s lackluster performance is raising concerns about the back-to-school shopping season and whether or not we are really experiencing an economic recovery.

As merchants reported their results Thursday, the Costco Wholesale Corporation posted a solid revenue gain, but it was fueled by its international business. Many merchants that cater to teenagers, including the Buckle, Hot Topic and Wet Seal reported drops in revenue.

Limited Brands, which owns Victoria’s Secret and Bath and Body Works, was among the bright spots.

The figures are based on revenue at stores open at least a year and are a crucial indicator of retailers’ health.

“My sense is that the consumer is very cautious at this stage given the state of the labor and housing markets,” said Ken Perkins, president of research firm RetailMetrics. “June sales are going to reflect that caution.”

A sluggish June sets up a “disappointing back-to-school season,” he said, adding that he expected those sales “to be very promotional.”