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Service contracts: what a real SLA has to cover

Response times, spare parts and who owns the downtime.

10 min read·Published 26 March 2026·Sourced · 4 references

A service contract is not a formality attached to the invoice — it is the document that decides who absorbs the cost the day the robot stops working.

An SLA is a risk transfer

Every SLA moves risk from one party to another, whether either side names it that way. A response-time clause, a spare-parts commitment, an uptime guarantee — each one answers the same question: whose budget takes the hit when the machine goes down.

Read backwards from that question and the document gets easier to negotiate. A vendor comfortable naming a response time in hours, not "as soon as possible", is a vendor who has already priced the risk into the contract rather than into a later renegotiation.

“An SLA nobody has ever invoked is not proof it is a good contract — it is proof nobody has tested it yet.”
Operations lead, systems integrator · Europe

Most disputes over a service contract trace back to a clause nobody pressed on before signing.

The clauses that matter

Response time only means something with a unit attached — hours on-site, not "priority support". Spare-parts coverage only means something with a location attached — held locally, not shipped from a factory on another continent. Uptime only means something with a measurement method agreed before the meter starts running.

The clauses that get skipped are rarely skipped by accident. They are the ones a vendor would rather leave vague, which is exactly why a buyer should ask for them in writing before the pilot, not during the first outage.

WHAT TO TAKE AWAY

  • Ask for a response time in hours, not a phrase like "priority support".

  • Spare-parts coverage only counts if the stock sits locally, not at a factory overseas.

  • Agree the uptime measurement method before the contract starts, not after a dispute.

  • A downtime clause with no name attached has not removed the risk — it has only delayed the argument.

A contract that reads well in a boardroom and a contract that holds up on a factory floor are not always the same document.

Who owns the downtime

Ownership of downtime has to be assigned somewhere — to the factory, the integrator, or the site operator — and a contract that leaves it unassigned has not removed the risk, only delayed the argument about it.

The safest test is practical: ask what happens when the robot stops mid-shift out of hours, and see whether the answer is a name and a number, or a shrug.

EDITORIAL RULE

Sourced or silent. Every figure on this page carries an attributed, dated source. Where we could not source a number, we left it out rather than estimate it.

SOURCES

  1. 01Manufacturer service SLAs2026
  2. 02N.O.N. Humanoid vetting notesFactory audits · 2026
  3. 03Operator interviewsEurope · Q1 2026
  4. 04Site commissioning logs2025–2026

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