Delta Construction Corporation, a general contractor, hires Eagle Electrical Company, a subcontractor, to wire a new office building. As the work progresses, Delta pays Eagle some of the price, but after completing most of the job, Eagle is owed more than $50,000. Eagle stops work to insist on being paid. Delta hires Fine Wiring, Inc., to finish the job. Eagle files a suit against Delta. Eagle's suspension of work is most likely