A manufacturer earns some revenue as long as the production line is up and running. However, the system is prone to failures, and a contractor is hired to take care of maintenance activities. We assume that the production system has a failure rate that follows the Weibull distribution and that the contractor can minimally repair breakdowns/failures (during the repairs, the failure rate stops increasing). The system also needs preventive maintenance (PM) from time to time to reset the failure rate to zero. The contractor pays for all the maintenance and repair costs, and the manufacturer pays the contractor a certain fixed payment per unit time. The contractor is also responsible for deciding the PM schedule: the contractor would let the system run normally, only doing repairs as needed, until a cumulative uptime of has passed since the last PM.