Mr O'Connor said despite the drop in crime, which was in part due to their work preventing offences, "there is no police officer anywhere in the country who hasn't got anything to do".
He thought that if Mr Key had the opportunity, he would not repeat the comment about police having spare time. "It's a comment that if he thought about it, he wouldn't make it again ... We all know it's an election time and it was an unfortunate off the cuff comment that I think even he will know that it does not reflect the reality of these things," he said.
"I saw the media comments and I thought that basically that's a bit silly ... but I'm sure Key wouldn't say that again if he'd thought them through. I think it was a somewhat flippant remark."
When asked last night if Mr Key stood by his comment, a spokeswoman said: "The Prime Minister's comment was a response to an assertion from a journalist that crime rates are rising when in fact they are falling."
Mr O'Connor said Mr Key's complaint about the recording of his private conversation with Act candidate John Banks left police between a "rock and a hard place".
Crimes were prioritised by how serious they were, he said. Murders and sexual offences were investigated before robberies and somewhat lesser crimes, but the "teapot tape" complaint had become a priority for police.
"If they don't investigate, they'll be accused of being political. If they do investigate it and don't investigate them properly, they'll be accused of being political. And if they investigate it to the nth degree, which they really need to do, they'll also be accused of being political."
"Police are very careful that we support policy and not politicians. We don't want to get dragged into this either."