This article reports a research on active offer of French Language Services (FLS) in Ontario. The study objectives were to identify the definitions of active offer of FLS, to identify the practices of active offer (facilitators and / or barriers), to identify indicators to measure the active offer and propose recommendations to improve the active offer of FLS. To this end, a literature review, a survey of professionals in the field of planning health services in French and a workshop concept mapping has been undertaken.