Sergey Brin, Google's president for technology, said the rate of hiring had slowed.
The rate of hiring growth, however, slipped to a four-month low.
And, during recent months, the rate of hiring has been picking up and the unemployment rate has fallen to 6.3percentnt.
By far the most important factor is the overall rate of hiring, not the level of unemployment benefits.
"The rate of hiring and retention of people of color has always been dismal in the advertising industry.
"Although the rate of private-sector job openings remained elevated, the rate of hires declined in both March and April and the rate of quits was unchanged".
Compared with the size of the economy, the rate of hiring was even slower than during the weak recovery of the early 1990's.
Amid shareholder concerns about its fast-rising expenses, Mr. Schmidt promised investors last year that Google would slow its rate of hiring.
For example, Google added only 99 workers in the quarter, to end the year with 20,222, the lowest rate of hiring since the company went public in 2004.
Employers said they added 26,200 workers in May, nearly double the usual rate of hiring in mid-spring, said James P. Brown, principal economist for the New York State Department of Labor.
