Hello. What will happen if I end a contract with 0:00 hours of work?

[mzavtur]

Will I have this job in my history? will there be a feedback from client? will it affect my score even with 0:00 hours of work?

[a_lipsey]

If there are no earning on the contract, yes, it will negatively affect your JSS.  I'm not sure if the client will be prompted to leave feedback or not, but if you cancel it and haven't done the agreed upon work, they will probably leave negative feedback. Why do you want to cancel it? 

[mzavtur]

This client is impossible to work with. What should I do? End the contract myself or ask him to end it? Will it make a differense? How bad will it affect my JSS even if I don't have JSS at the moment? That's my first job on upwork and I don't have score yet. How does it work with JSS?