WASHINGTON (AP) — Chief executives for the largest U.S. companies are more optimistic about sales over the next six months and plan to add more workers.

The Business Roundtable said Wednesday that its April-June quarterly survey found 32 percent of its members expect to expand payrolls in the next six months. That’s up from 29 percent in the January-March survey. And 78 percent expect their sales to increase. That’s up from 72 percent from the previous survey.