Outsourcing maintenance work to vendors solves a staffing problem, but it often creates a visibility problem. Did the vendor actually show up on time? Was the repair completed as described, or just marked "done" in an invoice? Without proof, facility teams are left trusting paperwork that arrives weeks after the work was supposedly finished. Facility vendor dispatch and proof of work software closes that gap — dispatching vendors digitally, tracking their arrival, and capturing photo verification before any invoice is approved.
Article · Vendor Management
Know Exactly What Your Vendors Did — With Proof
Digital dispatch, arrival tracking, photo verification, and complete proof-of-work records for every vendor visit.
The Trust Gap in Outsourced Maintenance
When work happens behind closed doors and the only feedback loop is a monthly invoice, facility teams are forced to either trust completely or audit constantly — neither of which scales. Proof-of-work workflows replace blind trust with a simple verification step that takes the vendor seconds to complete.
Job Dispatched
Vendor receives job details, location, and access instructions digitally — no phone tag.
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Arrival Logged
Check-in timestamp confirms the vendor arrived on-site, with location verification.
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Photo Proof Captured
Before and after photos document the work performed, attached directly to the job record.
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Completion Verified
Job marked complete with full documentation — ready for invoice review and approval.
Stop Approving Invoices Based on Trust Alone
Oxmaint gives every vendor visit a digital trail — dispatch confirmation, arrival timestamp, and photo proof — so invoice approval is based on verified work, not assumptions.
What Proof-of-Work Records Actually Capture
Dispatch Timestamp
Exact time the job was sent to the vendor, establishing a clear response time benchmark.
Arrival Confirmation
Check-in time when the vendor reaches the site, closing the loop on no-show disputes.
Before Photos
Visual documentation of the issue prior to work starting — useful for scope verification.
After Photos
Completed work documented visually, confirming the repair matches what was billed.
Time on Site
Duration of the visit, useful for evaluating labor charges against actual time spent.
Completion Notes
Vendor-submitted summary of work performed, parts used, and any follow-up required.
Vendor Performance Comparison
| Vendor |
Avg. Response Time |
On-Time Arrival Rate |
Photo Compliance |
| HVAC Services Co. |
3.2 hours |
96% |
100% |
| ElecTech Partners |
5.8 hours |
81% |
98% |
| Plumbing Direct |
4.1 hours |
93% |
87% |
| GeneralFix Contractors |
7.5 hours |
68% |
79% |
Performance data like this gives facility teams real leverage in vendor reviews and renewal negotiations — replacing subjective impressions with measurable history.
Common Disputes This Solves
"They Were Never On-Site"
Arrival timestamps with location verification settle no-show disputes immediately, without back-and-forth.
"That's Not What Was Fixed"
Before and after photos provide visual confirmation of exactly what work was performed on-site.
"The Hours Don't Match"
Time-on-site records give a factual basis for reviewing labor charges against actual visit duration.
Expert Review
"We used to dread invoice season because half our time went to chasing vendors for clarification on what was actually done. Now every job has photos and timestamps attached before the invoice even arrives. Disputes that used to take weeks of back-and-forth get resolved in minutes, because the proof is already sitting in the record."
— Vendor Operations Manager, Multi-Site Facility Group
Give Every Vendor Visit a Digital Trail
Book a 30-minute demo and see how Oxmaint dispatches vendors, tracks arrival, and captures proof of work — all before an invoice is ever approved.
Frequently Asked Questions
How do vendors receive job dispatches and submit proof of work?
Vendors receive job details digitally with location and access instructions, then check in on arrival and upload before and after photos directly through
Oxmaint's vendor portal — no separate app installation required.
Can proof-of-work records be used to dispute vendor invoices?
Yes — timestamps, photos, and completion notes provide a factual record that can be referenced directly when reviewing invoices for accuracy before approval.
Does this work with vendors who aren't tech-savvy?
The vendor portal is designed for simple mobile use — check-in and photo upload require only a smartphone camera, with no special training needed for vendor technicians.
Can we track performance trends across multiple vendors over time?
Yes — response time, on-time arrival rate, and photo compliance are tracked per vendor over time, giving you data for renewal and performance reviews.
Book a demo to see sample vendor scorecards.
