Some time ago, a foundation subcontractor did some work on a development in Chicago. The foundation sub was subcontracted to a general contractor (GC), who was in turn under contract to the owner. Once on the site, the foundation sub suggested to the GC that the foundation footings should be taken deeper than originally specified. The GC agreed. The general contractor and the foundation subcontractor framed and poured the deeper foundation and formed a few other "extras" at the general contractor's direction. After the extras were performed, the sub asked the general to sign three written change orders covering the additional work. The general contractor didn't sign. When the sub submitted a bill for the extra work, the contractor refused to pay
