Transformation and Human Resources Consultancy

Your partner of choice for tackling the challenges of your digital transformation.

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Discover our approach

We believe in consultancy that connects and elevates. At the intersection of expertise and people, we support organisations, teams and individuals through their transformations, both in France and internationally. Together, we turn HR solutions into a driver of collective progress.

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Our news

Oasys & Cie | Diot-Siaci recognised by Leaders League as one of the key players in Human Resources consultancy

June 19, 2026
Human Resources

The 2025 Leaders League rankings highlight the expertise of the Oasys | Diot-Siaci teams and its brands, which work alongside organisations every day to help them tackle their transformation challenges.

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C&B Remuneration and Communication Observatory 2025

February 24, 2023
Remuneration and C&B Communications

Pay equality and pay transparency are no longer merely HR issues: they are now recognised as major strategic and regulatory challenges.

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Harmonising company articles of association: a strategic tool for organisations

February 24, 2023
Harmonization of employment statuses

In this episode of the Conseil podcast, Constantin Vellis, Senior Compensation & Talent Consultant at Diot-Siaci, analyses the challenges involved in harmonising employment terms and explains why this issue has become a strategic priority for organisations.

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