Automating HR & Payroll for a 200-Employee Lagos Company

A fast-growing Lagos company with 200 employees was still running payroll on Excel. The HR team spent the first week of every month manually computing salaries, PAYE taxes, pension contributions, and deductions. Errors were common, employees frequently complained about incorrect payslips, and the company was at risk of non-compliance with tax and pension regulations.

We built a complete HR and payroll management platform that automated the entire payroll cycle, digitised leave management, enabled performance reviews, and gave employees a self-service portal. The HR team now processes payroll in 4 hours instead of 5 days, and the company saves ₦3.5 million monthly in administrative overhead and error-related costs.

The Challenge

Manual Payroll Was a Month-Long Headache

The company's payroll process involved collecting timesheets from department heads, manually entering data into Excel, computing PAYE tax using outdated tax tables, calculating pension contributions, and generating individual payslips. Any change—like a salary adjustment or new hire—required re-checking formulas across multiple spreadsheets. Mistakes happened frequently, and resolving them was time-consuming.

The HR team had no central system for employee records. Staff files were stored in physical folders and scattered across email threads. Leave requests were managed through email, with no way to track who was on leave at any given time. Performance reviews were conducted ad hoc, with no standardised process or documentation.

Growing Compliance Risks

With the company adding 10 to 15 new employees per quarter, manual payroll processing was becoming riskier. Incorrect PAYE remittances could trigger penalties from the tax authority. Pension contributions needed to be remitted accurately to the Pension Fund Administrator by the 7th of each month, and the company was struggling to meet this deadline consistently.

Our Solution

Fully Automated Payroll Engine

We built a payroll engine that automates the entire payroll lifecycle. The system imports employee data, applies salary structures and allowances, calculates PAYE tax using the latest Nigerian tax tables, computes employer and employee pension contributions per the Pension Reform Act, handles third-party deductions (loan repayments, union dues, garnishments), and generates payslips and reports.

The system supports multiple pay schedules—monthly for salaried staff and weekly for contract workers—and handles prorated calculations for mid-cycle hires and terminations. Payroll runs that previously took 5 days now complete in under 4 hours, including verification and approval steps.

Employee Self-Service Portal

Every employee received access to a self-service portal where they can view digital payslips, submit leave requests, update personal information, access their employment history, leave balances, download tax certificates, and submit expense reports. This reduced the administrative burden on HR by over 60%, as employees no longer needed to email or visit the HR office for routine requests.

Performance Management and Leave Administration

We configured a performance review module that supports goal setting, mid-year reviews, and annual appraisals with 360-degree feedback. Managers can track progress against objectives, submit ratings, and generate performance reports linked to compensation decisions. The leave management system handles multiple leave types with configurable accrual rules, approval workflows, and calendar integration so managers can see who is out of office at a glance.

The Results

The system went live after 3 months of development and data migration. The first automated payroll run processed all 200 employees without a single error. The HR team now completes payroll in 4 hours on the first working day of the month, freeing the remaining 3 weeks for strategic HR initiatives like talent development and culture building.

The company reduced its administrative overhead by an estimated ₦3.5 million per month, primarily from eliminating overtime costs, avoiding regulatory penalties, and reducing the need for external payroll consultants. Employee satisfaction with HR services improved significantly, with the self-service portal receiving a 94% satisfaction rating in the first employee survey after launch.

Key Takeaways

• Payroll automation pays for itself quickly. The system cost was recovered within 2 months through reduced administrative overhead and eliminated penalty risks.
• Self-service portals reduce HR workload. Giving employees direct access to payslips and leave requests eliminated hundreds of email-based requests per month.
• Compliance features are critical for Nigerian companies. Automated PAYE and pension calculations removed the risk of regulatory penalties and late remittance fees.
• Data migration requires careful planning. Cleaning and importing 5 years of employee records was the most time-consuming part of the project, not the software development.

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