A contractor invoice lands on the maintenance manager's desk showing 340 hours of work on a kiln shutdown. Nobody can say for certain whether that number is right, because the only record of what actually happened is a handwritten log the contractor's own supervisor filled in. Paying it means trusting the contractor to mark their own homework. Disputing it means weeks of back and forth with no evidence on either side. This case study covers how a cement plant moved contractor work orders, labor hours, and sign-offs into its CMMS, and how doing that recovered £880K in overrun and disputed contractor costs over one year. Sign up to set up the same contractor tracking for your own site.
Contractor work at the plant was tracked through handwritten logs and end-of-job invoices, with no independent record of hours worked, tasks completed, or delays caused. Overrun costs kept climbing because there was nothing to check contractor invoices against, disputes dragged on for weeks without evidence either side could point to, and finance had no reliable way to see which contractors were consistently running over budget.
Results After Moving Contractor Work Orders Into The CMMS
Where The £880K Recovery Came From
Oxmaint lets you issue digital work orders, log contractor hours against real tasks, and get sign-off before an invoice is even raised, so overruns get caught while the job is still open. Sign up for a free trial to set up your own contractor work orders, or book a demo to see labor tracking in action.
Contractor Management Before And After
Contractor invoices stopped being a matter of trust and became a matter of record. Every hour billed could be checked against a work order that had already been signed off on site, disputes dropped because both sides were looking at the same data, and finance finally had a clear, audit-ready view of contractor spend across the plant.
Frequently Asked Questions
Turn Contractor Invoices Into Verified Work Orders
Oxmaint puts contractor work orders, labor tracking, and sign-off in one place, so your plant can catch overruns while a job is still open instead of disputing an invoice weeks later. Sign up for a free trial to set up your first contractor work order, or book a demo to walk through this case study in detail.






