In the past three months, help-wanted ads declined in all U.S. regions, with the biggest drops in the Pacific (down 24.6 percent), East South Central (down 16.4 percent) and Mountain (down 15.4 percent), the board said in a statement posted to its Web site.

The research also found the total number of job ads posted online was 4,280,400 in June, a drop of two percent, or 94,000, from May. For every 100 people in the labor force in June, there were 2.8 advertised vacancies online, according to the statement.

“Already, there are signs that job advertising volume is edging a little lower — with very slight decreases in each of the past two months,” said Ken Goldstein, a labour economist at The Conference Board. “Other forward indicators of labor market activity are not much stronger than the measure based on print advertising. Online volume showed a little loss in momentum in recent months. Initial unemployment claims also have turned more flat.”

The research firm surveys help-wanted print advertising volume in 51 newspapers across the country each month.