CO-RÉSO - Service Social du Travail

What CO-RÉSO - Service Social du Travail does

CO-RÉSO is a Brittany-based occupational social services organization founded in 1963, headquartered in Bruz (Campus de Ker Lann, near Rennes). The company provides three integrated service lines to businesses and local authorities in the Brittany region: (1) Service social du travail (occupational social work), delivered through 'temps partagé' shared-time on-site arrangements providing proximity employee support; (2) Psychologie du travail et médiation (work psychology and mediation), offering confidential psychological support, psychosocial risk prevention, and conflict mediation; and (3) Formations professionnelles (professional training), covering psychosocial risk prevention, trauma management, and managerial competencies.

The business model operates on a membership/subscription basis where companies become 'adhérents' to access occupational social work services, with training revenue flowing through OPCO professional development funding channels enabled by Qualiopi certification obtained in December 2021. CO-RÉSO serves 100+ member companies including Thales, Keolis, and Groupe Rocher (a 30+ year client). The organization maintains ISO 9001 quality certification and is a member of the national RESSIF network of occupational social service providers.

Revenue is not publicly disclosed. The GTM motion is enterprise field sales with direct B2B engagement and on-site permanence sessions at client locations. Training outcomes in 2025 included 87 trainees with 90% overall satisfaction, 100% exam pass rate, and 100% recommendation rate. The company operates as an independent membership-based service provider with no disclosed parent company, institutional investor, or M&A activity.

Name

CO-RÉSO - Service Social du Travail

Legal name

CO-RÉSO

Website

https://co-reso.fr

Company type

Private

Founded year

1963

Operating status

Operating

Headcount range

11–50 employees

Short description

CO-RÉSO is a Brittany-based occupational social services organization founded in 1963 that provides workplace social work, work psychology/mediation, and professional training to 100+ member companies and local authorities in France through on-site shared-time arrangements.

Ownership category

akta.pro rank

Headquarters

HQ city

Bruz

HQ country

France

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

Personnel, Operations, Marketing or Sales, Technology or R&D, Others

Revenue model

1. Service Social du Travail: Shared occupational social work services provided to companies on a membership/subscription basis. Services include workplace social support, psychosocial risk prevention, and career pathway security.
2. Professional Training: Continuing professional education programs on workplace health, psychosocial risk prevention, and managerial skills. Training is eligible for OPCO financing through Qualiopi certification.
3. Psychologie du travail et médiation: Occupational psychology and mediation services for enterprises including individual psychological support, collective support groups, organizational psychosocial diagnostics, and conflict mediation.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels4 records

Core offering

CO-RÉSO delivers shared occupational social work (service social du travail) to companies and local authorities in Brittany through on-site permanence sessions via shared-time (temps partagé) arrangements. Its offering combines three pillars: workplace social support to prevent employee fragility and maintain employment, confidential occupational psychology and professional mediation services, and Qualiopi-certified professional training on psychosocial risk prevention and managerial skills. The organization serves more than 100 member companies in the Brittany region.

Product overview

CO-RÉSO is a workplace social services organization operating as a unified service provider with three complementary core offerings: the Service social du travail (Workplace Social Service) providing occupational social work support to employees; the Psychologie du travail et médiation (Work Psychology and Mediation) service offering confidential psychological support and professional mediation; and the Formations professionnelles (Professional Training) programs developing managerial competencies and psychosocial risk prevention skills. These services work in an integrated manner to address quality of life and working conditions (QVCT) issues.

Differentiator

Problem solved

Functional benefit

Products and services

• Service social du travail
• Psychologie du travail et médiation
• Formations professionnelles

Quantifiable outcome

• 90% overall satisfaction rate for training programs
• +2 more outcomes

Named customers3 records

Segments4 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Six partnerships are on record, tiered core and minor.

• Prévention Santé Travail 35coreStrategic or Co-development Partner · 26 March 2026Co-organizer with Santé & Prévention BTP 35 of the 'Agir ensemble - le forum de la prévention et de la santé au travail' event in Ille-et-Vilaine, part of the 7th edition of Rencontres Santé-Travail 2026.
• Santé & Prévention BTP 35coreStrategic or Co-development Partner · 26 March 2026Co-organizer with Prévention Santé Travail 35 of the regional occupational health and prevention forum.
• ARACT BretagneminorStrategic or Co-development Partner · 26 March 2026Regional participant at the occupational health and prevention forum organized in Ille-et-Vilaine.
• Cap EmploiminorStrategic or Co-development Partner · 26 March 2026Partner organization participating in the regional forum, specializing in employment support for people with disabilities.
• Agefiph BretagneminorStrategic or Co-development Partner · 26 March 2026Regional organization for professional integration of disabled workers, participating in the prevention and occupational health forum.
• RESSIFcoreStrategic or Co-development PartnerCO-RÉSO is a member of the national RESSIF network, which enables mutualization of knowledge and coordination of interventions across the network of occupational social services in France.

Scale indicators5 records

Recent moves5 records

Expansion highlights4 records

Direct peers

• CIAMT: French inter-company occupational social work and job retention service. Directly comparable to CO-RÉSO in delivering shared workplace social services to enterprises via inter-company membership models.
• APAS BTP: Association providing occupational health and social services specifically to construction sector enterprises. Comparable to CO-RÉSO's inter-company SST model, though concentrated in the BTP industry rather than generalist.
• APST BTP: Regional occupational health and prevention service for the construction sector. Comparable inter-company service model addressing psychosocial risks and workplace prevention for member enterprises.

Others

• RESSIF: National network of occupational social work services (Service Social du Travail) in France. CO-RÉSO is a member; the network coordinates mutualization of knowledge and interventions across regional SSTs.
• Présanse: National professional association representing Services de Santé au Travail in France. Comparable ecosystem player and knowledge network for SST operators, analogous to CO-RÉSO's affiliation with the RESSIF network.

Emerging players

• Modern Health: Global digital mental health and EAP platform for employers. Comparable as a workplace mental-health support provider but technology-led and addressing the digital shift CO-RÉSO has not entered.
• Lyra Health: Employer-sponsored mental health benefits platform delivering EAP-style services digitally. Comparable outcome (workplace psychosocial support) but distinct tech-enabled delivery model.

Broad incumbents

• WorkLife (formerly ICAS): International employee assistance program (EAP) provider offering psychosocial support, mediation, and organizational advisory. Comparable to CO-RÉSO's work psychology and mediation offering but at international scale.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights6 records

Customer concentration

• LinkedInlinkedin.com/company/co-r-soservicesocialdutravail

Compliance1 record

Revenue estimate

Valuation estimate

Number of profiles

Profiles4 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about CO-RÉSO - Service Social du Travail