An approval workflow is a repeatable process that controls how a business request or item is reviewed and authorized before the organization takes action. The workflow defines who can submit, who must approve, what information approvers need, what happens if they do not respond, and what should happen after the decision.
An approval workflow replaces “Can you approve this?” email chains with a defined process. A request enters the workflow, the appropriate person or people review it, the decision is captured, and the process either continues, stops, escalates, or triggers the required business action.
What is an approval workflow?
Approval workflows create a formal path between a request and an authorized outcome. The process can be very simple — one employee submits a request and one manager approves it — or it can contain multiple reviewers, conditional logic, deadlines, escalations, document controls, and automated actions across several systems.
Some approval workflows require only one decision. Others use multi-level approval workflows where a request passes through several stakeholders, either sequentially or in parallel.
An employee requests access to a sensitive application. The workflow validates the request, sends it to the employee’s manager and application owner, adds Security approval if the resource is sensitive, and provisions access only after all required approvals are complete. See IT access request approvals for this pattern in more detail.
Where are approval workflows used?
Approval workflows are useful whenever an organization needs a consistent authorization step before money is spent, access is granted, a document is finalized, a change is implemented, or another business action takes place.
Application access, Google Groups, Shared Drives, software requests, elevated permissions, admin rights, security exceptions, and IT changes.
Invoice approvals, payment requests, purchase requests, expenses, budgets, discounts, and financial adjustments.
Vendor onboarding, purchase orders, software purchases, contract renewals, supplier selection, and procurement exceptions.
Hiring, onboarding, promotions, compensation changes, leave, role changes, equipment requests, and offboarding.
Contract review, legal agreements, policy changes, data-processing agreements, and non-standard terms.
Policies, proposals, reports, marketing materials, financial documents, contracts, and other content that must be reviewed before release.
Discounts, pricing exceptions, campaign budgets, sponsorships, brand approvals, promotional offers, and partner agreements.
Facilities requests, internal services, operational changes, vendor management, asset requests, and cross-department approvals.
Manual vs. automated approval workflows
A manual approval process can work when request volume is low, the approver is obvious, and the business action is simple. Problems usually appear when the process grows, crosses departments, requires multiple systems, or needs a reliable audit trail.
| Area | Manual approval | Automated approval |
|---|---|---|
| Request intake | Email, chat, spreadsheet, or verbal request | Structured form, portal, system event, or conversational request |
| Approver selection | Requester decides who to contact | Workflow identifies the correct approver from request data and business rules |
| Follow-up | Requester manually chases approvers | Reminders, expiry rules, delegation, and escalation run automatically |
| Complex approval paths | Handled through forwarded messages and institutional knowledge | Conditional, sequential, and parallel approval logic is defined in the workflow |
| Document control | The document may continue changing while it is being reviewed | A fixed version can be created or editing can be controlled during approval |
| Post-approval action | Someone performs the approved task manually | The workflow can execute the required action automatically |
| Audit trail | Decisions are spread across inboxes, chat, and spreadsheets | Request, approvers, decisions, comments, timestamps, and actions are recorded together |
Approval workflow software is most useful when the business needs more than a digital Approve/Reject button — for example, dynamic approvers, conditional routing, escalations, document controls, or actions that must happen automatically after approval.
What are the common challenges of approval workflows?
A process can stop indefinitely when an approver does not respond and there is no expiry, delegation, or escalation rule.
Approvers may depend on department, manager, location, amount, risk level, resource ownership, or other request data. Static routing becomes difficult to maintain.
Over-engineered workflows create unnecessary approvals for low-risk requests, while under-designed workflows may not provide enough oversight for high-risk ones.
This is especially dangerous for documents. If an editable document changes after one reviewer approves it, later reviewers may be approving a different version. The final document can then differ from what was actually authorized. A controlled process should lock editing or create a fixed approval version or snapshot.
Employees may not know whether the request is waiting for a manager, Finance, Legal, IT, or another stakeholder, so they resort to manual follow-up.
Many processes still require someone to provision access, create a purchase order, update a record, send a document, process a payment, or complete another action manually after approval.
When the request, decision, comments, and resulting action live in different systems, reconstructing what happened later can be difficult.
How to make an approval workflow more efficient
The fastest approval process is not necessarily the one with the fewest approvers. A good workflow reduces unnecessary waiting while preserving the controls that matter.
- Use structured request data instead of free-form email wherever possible.
- Determine approvers dynamically rather than maintaining one static chain for every request.
- Add extra approval loops only when request data or risk requires them.
- Run independent approvals in parallel instead of sequentially.
- Define an expiry date and an explicit escalation path for non-responses.
- Use delegation or backup approvers for predictable absences.
- Lock documents or create a fixed version before the approval cycle begins.
- Keep requesters informed automatically as the status changes.
- Automate the approved business action instead of handing the work back to an administrator.
- Capture the request, decision, comments, timestamps, and resulting action in one audit trail.
Approval workflow in Zenphi: a practical walkthrough
Zenphi can be used to automate the workflow around an approval rather than only digitizing the approval decision itself. A typical implementation can look like this:
Start from a Google Form, Jotform, Typeform, an internal portal, another application, or a business event. A workflow can also be converted into an enterprise AI agent for Google Chat using Zenphi AI Studio, allowing employees to start the process conversationally.
Check required information, look up employee or business data, identify the requester’s manager, resource owner, budget owner, or other context needed to route the request correctly.
Route to one approver or several. Zenphi can run approvals sequentially or in parallel and add extra approval loops based on request data such as amount, department, requester role, resource, or risk level.
Set the time an approver has to respond. If the request expires without an explicit approval or rejection, the workflow can remind, reroute, escalate, create a task, or close the request according to the organization’s policy.
After approval, Zenphi can act in Google Workspace or connected external systems — for example, provision access, update a record, create an invoice, process a payment, create or send a purchase order, generate a document, onboard or offboard a user, or update Google Workspace permissions.
Notify the requester and relevant stakeholders, then retain the decisions, comments, timestamps, and downstream actions as part of the workflow history.
Examples of approval workflows Zenphi customers automate
Real approval processes rarely stop at the decision itself. In Zenphi customer environments, approvals are commonly embedded inside larger workflows:
For example, Gordon Food Service uses Zenphi to put validation, approvals, and Google Workspace administration behind employee self-service requests. SOCAR Malaysia uses structured workflows for both Finance approvals and IT access requests. These are different business processes, but the underlying pattern is the same: capture the request, apply policy, obtain the required decision, and automate what happens next.
Bring us one messy approval workflow. We’ll automate it with you in 30 minutes.
Talk to a Zenphi workflow expert and bring a real process that currently runs through email, spreadsheets, forms, chat, or manual follow-up. We’ll map the request, approval logic, exceptions, escalation path, and post-approval actions and show you how it can work as one automated process.
Talk to an approval workflow expert