Construction Company

I am doing an assignment for by Business Law class and I need to know if the company could file a lawsuit against the company that they hired to do the construction, if they hired a subcontractor to finish the job with out telling them? Is this considered breach of contract? What if the subcontractor did a poor job, is the construction company reliable for the subcontractors performance? I believe I know the answers to these questions, I just want to be sure. Thanks