However, productivity is difficult to measure in the public service. For example, I recall that for every £5 invested in the health service, there was a £1 improvement in services. Issues such as this need to be tackled. People must be faced with the prospect that if an agreement is based on productivity, it has to be measurable, achievable and policed. It is difficult to do so in regard to certain jobs. Senator Ross pointed out the embarrassment of the Seanad and I must put up my hands and acknowledge that was an own goal.