The hidden jobs are the worst. The visible ones get the rewards. The hidden ones are the kind that are only noticed when something goes wrong. Companies that grind to a halt because the woman who franks the post of an evening is off sick and no-one else knows how to work the machine. The queue at a McDonald’s drive-thru got to see this job. Cleaning the outside of the rear of the building with harsh jets of water. And then doing it all again. Not really hidden, not this time. Probably no great rewards. But if it’s not done then there will be repercussions.