A true story.
"Ok you did a very good job during these 3 months, so we think you can go on with us."
"Thanks, so how about the final contract?"
"What? oh no eheh, you will do other 3 months as test because we want to see if you can do also other stuff not only as developer, we need that you act also like a secretary, a tester, a manager, and working again for home after work, and also during the weekend, but we can't pay extra work of course. So, what you think?"

The magic world of startups