Let me start by reading through the provided content carefully.
First, the document's title is "Éclairages: L’emploi dans le bâtiment lié au logement social". The issue number is 26, November 2021. The main sections are "Sommaire" with two parts: "Un investissement du secteur du logement social de plus de 18 Mds€ par an" and "Un nombre d’emplois créés ou maintenus dans le secteur du bâtiment important".
Under the first section, there are subsections 1.1 and 1.2. 1.1 says social housing accounts for a quarter of housing construction. 1.2 mentions that 60% of the sector's investment is in new construction.
The second section has 2.1 and 2.2. 2.1 states that nearly 300,000 jobs are generated by the social housing sector in construction. 2.2 indicates that these jobs are mainly created or maintained in three regions: Île-de-France, Auvergne-Rhône-Alpes, and Hauts-de-France.
I need to make sure the summary is in French, concise but detailed. The user specified not to add any titles or language markers, so I should start directly with the content.
I should mention the key points: the annual investment of over 18 billion euros, the quarter of housing construction, 60% in new builds, the number of jobs (300k), and the regions where these jobs are concentrated.
Check for any specific terms or numbers that need to be emphasized. Also, ensure that the summary flows logically, connecting the investment to the employment impact.
Avoid any markdown and keep it straightforward. Make sure the regions are correctly spelled in French. Let me structure the summary to first present the investment figure, then the proportion of construction, followed by the employment stats and regions.
Wait, the user provided the original text in French, so I need to mirror that structure. Also, note that the original has some line breaks and sections, but the summary should be a continuous text.
Double-check the numbers: 18 Mds€ is 18 billion euros. The regions are Île-de-France, Auvergne-Rhône-Alpes, and Hauts-de-France.
Make sure the summary is under 1000 characters as per the example. Let me count: the example given is 355 characters. So I need to be concise.
Start with the main topic: employment in the building sector linked to social housing. Mention the investment amount, the proportion of construction, the job numbers, and the regions.
Avoid any extra information not in the original. Use precise terms like "investissement du secteur" and "emplois créés ou maintenus".
Check for any possible errors in the regions' names. Yes, they are correctly spelled.
Now, put it all together in a coherent, concise summary without any markdown. Ensure that it's in French and matches the original's key points.
L’emploi dans le bâtiment lié au logement social représente un investissement annuel supérieur à 18 milliards d’euros, correspondant à un quart de la construction de logements. 60 % de cet investissement sont destinés à la réalisation de nouveaux logements. Ce secteur génère près de 300 000 emplois, majoritairement maintenus ou créés dans les régions Île-de-France, Auvergne-Rhône-Alpes et Hauts-de-France. Ces régions concentrent la plus grande partie des activités de construction sociale, soulignant leur importance économique et leur rôle dans la création d’emplois durables.
