He said the UK saw one of the "strongest rebounds" in the second quarter.
"Things have recovered quite quickly in January and into February," he said. "Today we are operating broadly at 15-20% lower levels of activity generally around the world, so obviously there is a gap to close, but it is is progressively being closed.
"I think in the professional world people are starting to get more into growth mode."
Hays shares were up 0.6% to 159p in early trading.