On April 2, 2026, Odoo and Partena Professional announced a strategic partnership to unify HR management and payroll processing in Belgium. For the Belgian ERP publisher based in Louvain-la-Neuve, this represents the largest contract ever signed — ten times bigger than their previous largest client, according to Fabien Pinckaers, CEO of Odoo (La Libre, April 2, 2026).
Why This Partnership Matters
Partena Professional is Belgium’s second-largest player in the HR services and payroll market. The social secretariat processes 920,000 payslips monthly for 52,000 companies and employs 2,500 people (Forbes Belgium).
Until now, Partena relied on around thirty separate software tools, some still running on COBOL systems from the 1990s. The partnership’s goal: replace this software stack with a unified platform built on Odoo, covering the entire HR journey — from recruitment to payroll, including time management and social declarations.
Belgium ranks as the third most complex country worldwide for payroll, behind Mexico and Germany, with 260 joint committees each dictating specific salary rules (La DH, April 2, 2026). Simplifying this complexity represents a major technical challenge — and a strong signal of Odoo’s growing maturity.
What This Changes for European Businesses
Integrated Platform Launch in 2027
The rollout is scheduled for January 1, 2027, starting with joint committees 200 (employees) and 302 (hospitality) — the two largest in Belgium. The offering will then gradually expand to other committees. A dedicated team of approximately 40 people (developers, consultants, strategists) is working on the integration (La Libre).
A Signal of Odoo’s Market Evolution
This contract marks a turning point in Odoo’s positioning. The Belgian publisher, historically perceived as an SME solution, demonstrates here its capacity to handle industrial volumes — nearly one million monthly payslips. Unprecedented: Odoo accepted a commercial exclusivity clause and opened its source code to Partena, two concessions never made before.
The company projects revenues of €900 million in 2026 (up from €620 million in 2025) and targets €1 billion in 2027, with plans to hire 3,000 people this year, including one-third in Belgium (La Libre).
Impact on the Social Secretariat Market
For Partena’s 52,000 client companies, the promise is concrete: one unified tool instead of dozens of siloed software applications, a modern interface, and payroll management directly integrated with HR processes. For competitors (SD Worx, Securex, Acerta), pressure mounts — the alliance of a major social secretariat with an ERP publisher capable of providing a unified platform redefines market expectations.
What to Watch
The January 1, 2027 deployment will be the real test. Migrating 920,000 monthly payslips from COBOL systems to an Odoo platform, while respecting the rules of 260 joint committees, is a project of rare complexity. The success — or failure — of this migration will become a textbook case for any large-scale ERP project in Europe.
To explore related topics, read our SAP vs Odoo comparison for SMEs, our analysis of real Odoo implementation costs in 2026 and our guide on ERP HR and payroll: integrated module vs dedicated solution.
