[xvector]

I wonder if those workers can be reported and fired.

[giarc]

It was quite a while ago so I don't remember what my options were. If I recall correctly I was able to see individual workers responses, so once I found one that was obviously faking results, I was able to reject all their submissions.

[csunbird]

I mean, depending on how the OP phrased the work to be done, they probably did valid work.