A Service Level Agreement, often called an SLA, is one of the most important documents when buying services.
The problem is that many buyers treat the SLA as something to discuss after the supplier has already been selected. That creates risk. If the expected service level is not included in the RFQ, suppliers may quote based on different assumptions. One supplier may price a basic service, another may price a premium service, and the buyer may believe the offers are comparable when they are not.
An SLA should therefore be prepared early. In procurement, the SLA should normally be included in the RFQ package and later become part of the signed contract.
That way, the buyer can compare suppliers on the same service expectations, negotiate based on clear requirements, and follow up supplier performance after contract award.
In this article, you will learn what a Service Level Agreement is, why it matters in procurement, what it should include, and how buyers can use it in RFQs, contracts, and supplier performance management.
LHTS framework connection
Role: Tactical procurement
Supporting roles: Operative procurement and procurement management
Process: RFQ preparation, service specification, supplier quotation, supplier evaluation, contract negotiation, contract implementation, supplier performance management
Level: Advanced
Related course: RFQ template
Supporting learning: Service Description and Statement of Work, Supplier Performance KPIs
Quick answer: What is a Service Level Agreement?
A Service Level Agreement is a document that defines the agreed level of service between a customer and a service provider.
In procurement, the SLA should describe:
- what service the supplier must deliver
- when and where the service must be available
- which performance levels must be achieved
- how performance will be measured
- how results will be reported
- what happens if the supplier does not meet the agreed service level
- how issues will be escalated
- how the SLA connects to the contract
A good SLA makes service expectations measurable, comparable, and contractually clear.
The problem: without an SLA, suppliers quote on different assumptions
Service procurement is often difficult because services are less visible than products.
If a buyer purchases office chairs, the specification can define size, material, color, quantity, and delivery date. But if a buyer purchases cleaning services, IT support, reception staffing, logistics services, maintenance, consulting support, or customer service operations, the service must be defined through performance expectations.
Without a clear SLA, suppliers may interpret the requirement differently.
For example, one supplier may assume:
- support during office hours only
- response within 24 hours
- monthly reporting
- limited escalation responsibility
- standard staffing levels
Another supplier may assume:
- extended service hours
- response within 30 minutes
- weekly reporting
- clear escalation routines
- backup staffing and quality follow-up
Both suppliers may submit prices, but the offers are not comparable.
This is why the SLA should be part of the RFQ package. It tells all suppliers what service level they are expected to price, deliver, and report.
Why the SLA belongs in the RFQ package
The RFQ package should give suppliers enough information to submit a complete and comparable offer.
For service procurement, the SLA is a key part of that package because it defines the expected performance level.
Including the SLA in the RFQ helps the buyer:
- make supplier quotations comparable
- reduce unclear assumptions
- test whether suppliers can meet the required service level
- evaluate service quality, not only price
- identify cost drivers in the service model
- negotiate from a clear requirement baseline
- reduce disputes after contract award
- connect supplier commitments to measurable KPIs
If the SLA is not included until after supplier selection, the buyer may discover too late that the preferred supplier cannot deliver the required service level at the quoted price.
Why the SLA should be part of the signed contract
An SLA should not remain an informal document. It should become part of the signed contract, either as an appendix, schedule, attachment, or incorporated service document.
This matters because the SLA defines operational obligations that may not be fully described in the main commercial agreement.
The contract may define:
- legal parties
- pricing
- payment terms
- liability
- confidentiality
- termination
- governing law
- general obligations
The SLA defines:
- service scope
- availability
- response time
- resolution time
- reporting
- escalation
- performance metrics
- service credits
- operational responsibilities
Together, the contract and SLA create an import section of a service related agreement.
The main contract should clearly state that the SLA is part of the agreement and that the supplier is obligated to meet the service levels described in the SLA.
How this connects to the tactical procurement role
The SLA is mainly connected to the tactical procurement role because tactical buyers often lead RFQs, supplier evaluation, negotiation, and contract preparation.
A tactical buyer should make sure that the SLA is available before the RFQ is issued.
The tactical buyer should ask:
- What service is being purchased?
- What service level does the business actually need?
- Which KPIs should suppliers commit to?
- Which service levels are mandatory and which are preferred?
- How will suppliers prove capability?
- How will the SLA affect price?
- How will performance be reported?
- What happens if the SLA is not met?
- How will the SLA become part of the contract?
This is why the SLA is not only a technical or operational document. It is a sourcing document, a negotiation document, and a contract document.
How this connects to operative procurement
Operative procurement may not always create the SLA, but operative buyers and operational stakeholders often experience the consequences when the SLA is weak.
If the SLA is unclear, operative teams may struggle with:
- slow supplier response
- unclear escalation routes
- poor service quality
- lack of reporting
- repeated service failures
- unclear responsibilities
- invoice disputes
- internal complaints
For example, if a supplier provides facilities services but the SLA does not define response time for urgent issues, the buyer may have no clear basis for escalation when service fails.
A strong SLA supports operative procurement because it gives the team a practical tool for day-to-day follow-up.
How this connects to procurement management
Procurement management should ensure that SLA usage is part of the procurement process for relevant service categories.
This includes:
- templates for SLA structure
- rules for when an SLA is required
- approval of critical service levels
- alignment with contract templates
- KPI governance
- supplier performance review routines
- escalation rules
- link to category strategy
- lessons learned after contract period
For important service agreements, the SLA is also a governance tool. It helps management understand whether the supplier is delivering the service quality the organization is paying for.
Where the SLA fits in the procurement process
The SLA should be considered before the RFQ is sent, not after the supplier has been selected.
1. Need definition
The buyer and internal stakeholders define the service need. This includes what service is required, why it is needed, where it will be performed, who will use it, and what good performance looks like.
2. Service description or Statement of Work
The Service description or Statement of Work explains the scope of the service. It answers what the supplier must do.
The SLA then defines how well the supplier must do it.
3. RFQ package
The SLA should be included in the RFQ package together with the service description, commercial template, contract terms, pricing format, evaluation criteria, and supplier response instructions.
4. Supplier quotation
Suppliers submit their offers based on the SLA. They should confirm whether they can meet the service levels, identify assumptions, and price the service accordingly.
5. Supplier evaluation
The buyer evaluates not only price, but also the supplier’s ability to meet the SLA. This may include staffing model, systems, reporting capability, escalation process, experience, and service delivery method.
6. Negotiation
The SLA can be negotiated together with commercial terms. For example, the buyer and supplier may discuss whether response time, availability, staffing, reporting frequency, or service credits are realistic and cost-effective.
7. Contract signing
The final SLA should be attached to or incorporated into the signed contract. The main agreement should clearly refer to the SLA.
8. Contract implementation
After contract award, the SLA must be implemented. Supplier and buyer teams must understand reporting, escalation, meetings, roles, and responsibilities.
9. Supplier performance management
The SLA becomes a performance management tool. It is used to review service quality, identify issues, drive improvements, and support contract decisions.
What should be included in a Service Level Agreement?
The content of an SLA can vary depending on the service, but most SLAs should include the following elements.
1. Purpose
The SLA should explain why the document exists and what service relationship it governs.
Example:
“The purpose of this SLA is to define the service levels, responsibilities, reporting requirements, and performance measures for reception staffing services delivered by the supplier.”
2. Scope of service
The SLA should describe which services are included and, where needed, which services are excluded.
This reduces disputes about whether an activity is included in the agreed price or should be treated as extra work.
3. Service location and service hours
The SLA should define where and when the service must be available.
For example:
- business hours
- extended hours
- weekends
- public holidays
- on-call support
- emergency support
- remote or on-site service
4. Service availability
For digital or technical services, availability may be one of the most important metrics.
For example:
- system uptime
- helpdesk availability
- support availability
- planned downtime
- maintenance windows
5. Performance metrics
Performance metrics make the SLA measurable.
Common SLA metrics include:
- response time
- resolution time
- uptime
- availability
- call answer time
- delivery accuracy
- service completion time
- customer satisfaction
- incident closure rate
- staffing coverage
- quality compliance
The metrics should be clear enough that both parties understand how performance will be measured.
6. Reporting requirements
The SLA should define how the supplier reports performance.
This may include:
- report frequency
- report format
- KPI dashboard
- incident reports
- root cause analysis
- improvement plans
- meeting schedule
Without reporting, the SLA becomes difficult to manage.
7. Roles and responsibilities
The SLA should define what the supplier is responsible for and what the customer is responsible for.
This is important because service performance often depends on both parties.
For example, the supplier may be responsible for staffing the service, but the customer may be responsible for providing access, information, systems, instructions, or timely approvals.
8. Escalation procedures
The SLA should explain what happens when service levels are not met or when urgent problems occur.
Escalation procedures may include:
- first contact point
- escalation levels
- response deadlines
- management involvement
- communication channels
- critical incident process
9. Service credits, penalties, or incentives
The SLA may include service credits, penalties, or incentives connected to performance.
These should be used carefully. The goal is not to punish the supplier for every minor deviation. The goal is to create accountability for important service commitments.
10. Change management
Services change over time. The SLA should explain how changes are requested, assessed, approved, priced, and documented.
11. Termination connection
The SLA should connect repeated or serious service failures to the contract’s termination or remedy provisions.
This does not mean every SLA breach should lead to termination. But the contract should explain what happens if performance remains unacceptable.
12. Price list or commercial appendix
In some cases, the SLA may include or refer to a price list. This can improve transparency, especially when the service includes extra work, call-outs, after-hours support, additional staffing, or optional service levels.
SLA, service description, and Statement of Work: what is the difference?
The SLA is closely connected to the Service description and Statement of Work, but they are not the same.
A service description explains the service in practical terms. It describes what the supplier will provide.
A Statement of Work, or SoW, is often a more detailed document that defines scope, deliverables, responsibilities, timeline, assumptions, and acceptance criteria.
An SLA defines the required service level and how performance will be measured.
In simple terms:
Service description: What service are we buying?
Statement of Work: What work must be performed and delivered?
SLA: How well must the service perform?
For many service purchases, the RFQ package should include all three elements or combine them in a structured way.
Practical example: SLA for front desk reception services
A company wants to buy front desk reception services for its headquarters.
Without an SLA, suppliers may assume different staffing levels, service hours, visitor handling routines, call response expectations, reporting requirements, and quality standards.
A basic SLA for front desk reception could include:
Purpose
To define the service standards, responsibilities, and expectations for staffing the front desk reception.
Scope of services
The supplier provides front desk reception services, including greeting visitors, handling inquiries, managing phone calls, registering visitors, supporting internal communication, and maintaining a professional reception area.
Service location
The service is performed at the company headquarters.
Service hours
Standard business hours are 08:00–18:00, Monday to Friday, with provisions for after-hours support if agreed.
Service objectives
The service should ensure:
- professional and courteous interaction with visitors and callers
- efficient management of inquiries
- a clean, organized, and welcoming reception area
- reliable staffing coverage during agreed service hours
Performance metrics
Examples of measurable SLA targets:
- 95% visitor satisfaction per month
- 98% of calls answered within three rings
- 100% compliance with dress code and professional behavior standards
- all visitor and caller inquiries responded to within one minute
- daily checks of the reception area
Responsibilities of the buyer
The buyer or customer organization should provide:
- procedures and instructions
- access to systems and facilities
- relevant visitor policies
- feedback on performance
- timely communication of changes
Responsibilities of the supplier
The supplier should:
- provide qualified reception staff
- train staff in customer procedures
- monitor performance
- handle staff replacement when needed
- address issues quickly
- maintain professional service quality
Monitoring and reporting
The supplier provides monthly performance reports and participates in quarterly review meetings.
Penalties and incentives
The SLA may include agreed penalties for repeated failure to meet critical metrics and incentives for consistently exceeding agreed targets.
This example shows why the SLA should be part of the RFQ. Suppliers need this information to calculate staffing, supervision, training, reporting, and backup requirements.
How to evaluate suppliers using the SLA
When the SLA is included in the RFQ, the buyer can use it as part of supplier evaluation.
Evaluation questions may include:
- Has the supplier confirmed all SLA requirements?
- Which SLA requirements has the supplier challenged?
- Can the supplier prove experience with similar service levels?
- Does the supplier have the systems needed to report performance?
- Does the staffing model support the SLA?
- Are escalation routines clear and realistic?
- Are service credits or penalties accepted?
- Does the price reflect the required service level?
The buyer should be careful with suppliers that accept all SLA requirements without explanation. For demanding service levels, the supplier should be able to explain how they will deliver.
Common mistakes when using SLAs in procurement
Mistake 1: Creating the SLA after supplier selection
If the SLA is created after the supplier has already submitted a price, the buyer may not know what service level the supplier actually priced.
Mistake 2: Treating the SLA as separate from the contract
An SLA should be incorporated into the signed contract. Otherwise, it may be difficult to enforce.
Mistake 3: Using vague performance metrics
A metric such as “fast response” is not enough. The SLA should define what fast means, how it is measured, and when exceptions apply.
Mistake 4: Including too many KPIs
Too many KPIs can make the SLA difficult to manage. Focus on the metrics that truly matter for service performance, risk, and user experience.
Mistake 5: Forgetting buyer responsibilities
Service quality often depends on both parties. If the buyer must provide access, data, approvals, or instructions, this should be stated clearly.
Mistake 6: Using penalties without improvement routines
Penalties alone rarely improve service. A good SLA should also include reporting, root cause analysis, corrective actions, and review meetings.
Mistake 7: Not aligning the SLA with the pricing model
Higher service levels often cost more. If the buyer demands faster response, longer availability, backup staffing, or detailed reporting, the price model should reflect that.
Link to related course: RFQ template
If you want to go deeper into how to build RFQ packages that create comparable supplier offers, the Learn How to Source course RFQ template is the most relevant next step.
An SLA is a good example of a document that should be prepared before the RFQ is issued. When the SLA is included in the RFQ package, suppliers understand the required service level from the beginning, and the buyer can compare offers on both price and performance.
The SLA also connects naturally to Service Description and Statement of Work, and Supplier Performance KPIs.
FAQ: Service Level Agreement
What is a Service Level Agreement?
A Service Level Agreement is a document that defines the agreed level of service between a customer and a service provider. It describes service scope, performance metrics, reporting, responsibilities, escalation, and consequences if service levels are not met.
Should the SLA be included in the RFQ?
Yes. For service procurement, the SLA should normally be included in the RFQ package. This helps suppliers quote based on the same service expectations and allows the buyer to compare offers properly.
Is the SLA part of the contract?
The SLA should be incorporated into the signed contract, usually as an appendix, schedule, or attachment. The main agreement should clearly state that the SLA forms part of the contract.
What is the difference between an SLA and a Statement of Work?
A Statement of Work defines the work, scope, deliverables, responsibilities, and assumptions. An SLA defines the expected service level and how performance will be measured.
What should an SLA include?
An SLA should include service scope, service hours, availability, performance metrics, reporting, roles and responsibilities, escalation procedures, service credits or penalties, change management, and termination connection.
Why is an SLA important in procurement?
An SLA is important because it makes service requirements measurable and comparable. It helps the buyer evaluate suppliers, negotiate clear commitments, include service levels in the contract, and follow up performance after award.
Can an SLA include a price list?
Yes. An SLA can include or refer to a price list, especially when the service includes additional work, optional service levels, after-hours support, call-outs, or variable service volumes.
Conclusion: the SLA should be designed before the supplier is selected
A Service Level Agreement is not only an operational document. In procurement, it is part of the RFQ package, part of supplier evaluation, part of negotiation, and part of the signed contract.
When the SLA is prepared early, suppliers understand what they are expected to deliver. The buyer can compare offers based on the same service level. The contract becomes clearer. Supplier performance becomes easier to follow up.
The practical next step is to review your next service RFQ. Check whether the SLA is included before the RFQ is sent. If it is missing, define the service scope, performance metrics, reporting requirements, escalation process, and contract connection before asking suppliers to quote.
A well-prepared SLA helps procurement buy services that are measurable, comparable, and manageable.