Political blogger Guido Fawkes, a pseudonym for transparency campaigner Paul Staines, has submitted a Freedom of Information request demanding details of Mr Myers's terms of employment.
It asks: 'Has Mr Myers been on any international trips with the Foreign Secretary? How much is Mr Myers being paid? Could you please provide a detailed job description?'
Privately-educated Mr Myers's appointment was revealed at the weekend after pictures emerged of him walking with 49-year-old Mr Hague in Westminster last year.
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