Greece's proposal to use "non-professional inspectors" including "students, housekeepers and even tourists" to crack down on tax evasion has earned the government wide scorn from political opponents and on the internet.
The proposal is one of seven reforms described in an attachment to a letter sent by Finance Minister Yanis Varoufakis to Dutch counterpart Jeroen Dijsselbloem, who is also president of the Eurogroup - the gathering of the 19 eurozone finance ministers.
Opposition parties New Democracy and Pasok, the coalition partners in the previous government, blasted the proposal as "ridiculous" and legally dubious.
The government hasn't confirmed the leaked contents of the letter, but didn't deny them either when replying to New Democracy.
The reform proposals will be discussed at a Eurogroup session in Brussels on Monday.