Services Contract (Services). Hiring a contractor to maintenance your equipment?This Maintenance Contract sets the expectations between the client and the contractor. Download a free equipment rental agreement template, and view sample lease and leasetoown agreements for construction equipment. Maintenance equipment contract specifications. AGC of Minnesota's Contracts Committee provides short form construction contracts for owners, contractors, subcontractors, and material suppliers. Optional maintenance contracts provide prepaid coverage for things like scheduled oil changes and tire rotations. These contracts are taxable. Contracts in Maintenance are those to procure materials and equipment. Working as or with an independent contractor in Minnesota?