How to Automate Leave Requests in Microsoft 365

An employee sends a leave request by email, adds a calendar block and hopes the manager sees both. A few days later, a colleague schedules an important meeting for the same period because the shared calendar was never updated. The manager cannot easily confirm the employee's remaining entitlement.

Automating leave requests in Microsoft 365 removes that uncertainty. Employees submit requests through a structured form, managers approve them through a defined workflow, and the shared calendar reflects who is available. The same process supports PTO for SharePoint and PTO for Microsoft 365, together with vacation, sick leave and other absence types.

Why leave requests need a structured process

The hidden cost of manual leave tracking

Manual leave management rarely fails at a single step. It fails because several disconnected tools each hold part of the truth. The email says one thing, the spreadsheet another, and the personal calendar may show only a blocked afternoon.

The result is administrative work for HR, repeated questions for managers and avoidable scheduling conflicts for teams. A structured workflow resolves this by making the request, balance, decision and calendar update part of the same process.

What a complete leave process should include

1. Choose the leave type

The employee selects a type such as vacation, sick leave, training or paid time off. Each type can have its own form, entitlement rules, workflow and permissions.

2. Check the entitlement and working schedule

The request should reflect the employee's entitlement, working days, flexible hours and public holidays. Full-day and partial-day requests should be captured consistently rather than entered in a free-text field.

3. Submit for approval

Once submitted, the request moves to the appropriate manager or group. The workflow can be sequential or parallel. A company might send requests to the direct manager and add second-line approval only when leave exceeds ten working days.

4. Update the shared calendar

After approval, the absence appears in the team time-off calendar. Employees can also have accepted leave added to their personal Outlook 365 calendar. Colleagues can then plan meetings and substitutions with accurate information.

5. Keep a clear status and history

The employee should be able to see whether the request is in progress, approved, rejected or cancelled. Managers should see the reason for a rejection and comments attached to the request. HR retains an entitlement history and audit trail.

What changes when leave requests are structured

How Time-Off Hub supports leave requests in Microsoft 365

Time-Off Hub is a SharePoint-hosted application that works in SharePoint and Microsoft Teams. It supports custom leave types, entitlements, accrual policies, working schedules, public-holiday import, custom forms, approval delegation, reporting and calendar integration.

• Flexible leave policies: separate rules for vacation, sick leave, PTO and custom absence types.
• Accurate balances: auto-accrual, carry-over settings and complete entitlement history.
• Practical approvals: sequential, parallel and mixed workflows with conditional logic.
• Continuity during absence: managers can delegate approval responsibilities.
• Team visibility: monthly, weekly and yearly calendar views with department filtering.
• Reporting and security: dashboards, role-based access, audit log and Microsoft 365 data hosting.

Rollout checklist for HR and operations

1. List all leave types and their eligibility rules.
2. Define how entitlement is accrued, carried over and displayed.
3. Agree manager delegation rules for planned absence.
4. Import public holidays and configure working schedules.
5. Set thresholds for second-level approval.
6. Pilot the calendar with one team before organisation-wide launch.