Jurors had to be citizens over the age of thirty and a corps of 6000 was enrolled at the beginning of each year, forming a conspicuous presence about town in their short brown cloaks, with wooden staves in their hands. The work was voluntary but time-consuming and they were paid a small fee: three obols per day at the time of "The Wasps". For many jurors, this was their major source of income and it was virtually an old-age pension. There were no judges to provide juries with legal guidance, and there was no legal appeal against a jury's verdict. Jurors came under the sway of litigious politicians like Cleon who provided them with cases to try and who were influential in persuading the Assembly to keep up their pay. However it is not necessarily true that Cleon was exploiting the system for venal or corrupt reasons, as argued in "The Wasps".