{"id":2540,"date":"2026-09-02T13:59:04","date_gmt":"2026-09-02T13:59:04","guid":{"rendered":"https:\/\/the-change-society.com\/pourquoi-le-taux-de-reussite-des-transformations-stagne-a-30-depuis-quinze-ans\/"},"modified":"2026-09-02T14:00:07","modified_gmt":"2026-09-02T14:00:07","slug":"pourquoi-le-taux-de-reussite-des-transformations-stagne-a-30-depuis-quinze-ans","status":"publish","type":"post","link":"https:\/\/the-change-society.com\/fr\/pourquoi-le-taux-de-reussite-des-transformations-stagne-a-30-depuis-quinze-ans\/","title":{"rendered":"Pourquoi le taux de r\u00e9ussite des transformations stagne \u00e0 30&nbsp;% depuis quinze ans"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Il y a quelques ann\u00e9es, j\u2019ai vu une agence nationale de service public tenter de modifier le mode de travail de quelques centaines de personnes, du jour au lendemain, par une simple note. Nouveaux p\u00e9rim\u00e8tres, nouveaux liens hi\u00e9rarchiques, nouvelle fa\u00e7on de communiquer entre les \u00e9quipes et les managers, le tout annonc\u00e9 dans une seule note de service. Pas de r\u00e9union, pas de p\u00e9riode de transition, personne pour demander ce que chacun risquait de perdre. Simplement&nbsp;: voici comment cela fonctionne d\u00e9sormais.   <\/p>\n\n<p class=\"wp-block-paragraph\">La note a \u00e9t\u00e9 diffus\u00e9e. Le travail n\u2019a pas chang\u00e9. Six mois plus tard, la plupart des \u00e9quipes fonctionnaient encore exactement comme avant, sous une paperasse qui affirmait le contraire.  <\/p>\n\n<p class=\"wp-block-paragraph\">Je pense \u00e0 cette agence chaque fois que je lis que le taux de r\u00e9ussite des transformations organisationnelles stagne \u00e0 environ 30&nbsp;% depuis plus de quinze ans. Il ne s\u2019am\u00e9liore pas. Il ne s\u2019aggrave pas. Il est simplement bloqu\u00e9, selon les propres recherches longitudinales de McKinsey, malgr\u00e9 une d\u00e9cennie qui a apport\u00e9 aux entreprises de meilleurs outils, plus de donn\u00e9es et bien plus de certifications en gestion du changement qu\u2019en 2011. Un chiffre qui refuse de bouger pendant aussi longtemps ne r\u00e9v\u00e8le g\u00e9n\u00e9ralement pas un manque de comp\u00e9tences. Il indique que l\u2019erreur est structurelle.     <\/p>\n\n<p class=\"wp-block-paragraph\">Voici la phrase de Bridges que je ne cesse d\u2019appliquer \u00e0 cette agence&nbsp;:  <\/p>\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\">\u00ab&nbsp;lorsqu\u2019un changement survient sans que les personnes ne passent par une transition, il ne s\u2019agit que d\u2019un r\u00e9agencement des chaises.&nbsp;\u00bb  <\/p>\n<\/blockquote>\n\n<p class=\"wp-block-paragraph\">La note de service a parfaitement r\u00e9agenc\u00e9 les chaises. Organigramme, fait. Liens hi\u00e9rarchiques, fait. Ce qu\u2019elle n\u2019a jamais accompli, c\u2019est l\u2019autre moiti\u00e9 du travail que Bridges nomme explicitement&nbsp;: quelqu\u2019un doit dire \u00e0 haute voix, pr\u00e9cis\u00e9ment, ce qu\u2019il est temps de laisser derri\u00e8re soi. Pas \u00ab&nbsp;nous nous modernisons&nbsp;\u00bb. Mais quoi, exactement, prend fin, et pour qui. La plupart des dirigeants, \u00e9crit Bridges, consacrent dix pour cent de leur \u00e9nergie \u00e0 expliquer le probl\u00e8me et quatre-vingt-dix pour cent \u00e0 vendre la solution. Cette agence a consacr\u00e9 pr\u00e8s de z\u00e9ro pour cent \u00e0 l\u2019un comme \u00e0 l\u2019autre. Elle s\u2019est content\u00e9e d\u2019annoncer le r\u00e9sultat et a suppos\u00e9 que la transition suivrait la note de service.        <\/p>\n\n<p class=\"wp-block-paragraph\">Ce ne fut pas le cas. Ce ne l\u2019est jamais. <\/p>\n\n<p class=\"wp-block-paragraph\">Il existe un second article de McKinsey, plus r\u00e9cent, qui nuance l\u2019histoire des 30&nbsp;% d\u2019une mani\u00e8re que je trouve plus utile que le chiffre lui-m\u00eame&nbsp;: les dirigeants qui comprennent ce qu\u2019ils g\u00e8rent r\u00e9ellement peuvent apparemment inverser la tendance pour atteindre 70 ou 80&nbsp;%. Ce qui signifie que ce chiffre stagnant n\u2019est pas un plafond de verre, mais une moyenne calcul\u00e9e sur de nombreuses organisations qui r\u00e9solvent bien le mauvais probl\u00e8me. Une note de service parfaitement ex\u00e9cut\u00e9e reste une note de service.  <\/p>\n\n<p class=\"wp-block-paragraph\">Je ne sais pas encore tout \u00e0 fait ce que j\u2019aurais dit \u00e0 cette agence de faire diff\u00e9remment dans cette salle, sous la pression, quelle qu\u2019elle soit, qui a produit une note imm\u00e9diate au lieu d\u2019un plan. Je sais ce que Bridges leur aurait dit. Je sais ce que quinze ans d\u2019un chiffre stagnant continuent de prouver, une note de service non lue apr\u00e8s l\u2019autre.  <\/p>\n\n<p class=\"wp-block-paragraph\"><em>Sources&nbsp;: William Bridges &amp; Susan Bridges, Managing Transitions. <a href=\"https:\/\/www.mckinsey.com\/capabilities\/people-and-organizational-performance\/our-insights\/successful-transformations\" target=\"_blank\" rel=\"noopener\">McKinsey \u2014 Losing From Day One: Why Even Successful Transformations Fall Short<\/a> (taux de r\u00e9ussite de 30&nbsp;%, inchang\u00e9 depuis plus de quinze ans). <a href=\"https:\/\/www.mckinsey.com\/capabilities\/people-and-organizational-performance\/our-insights\/change-is-changing-how-to-meet-the-challenge-of-radical-reinvention\" target=\"_blank\" rel=\"noopener\">McKinsey \u2014 Change Is Changing: How to Meet the Challenge of Radical Reinvention<\/a> (dirigeants avertis atteignant des taux de r\u00e9ussite de 70 \u00e0 80&nbsp;%). Mission anonymis\u00e9e, selon la m\u00eame convention que la ville pr\u00e8s de Paris dans \u00ab&nbsp;Le changement comme devenir de ce qui \u00e9tait d\u00e9j\u00e0 possible&nbsp;\u00bb. <\/em><\/p>\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n<p class=\"wp-block-paragraph\"><em>The Change Society aide les organisations \u00e0 clarifier leur ligne manag\u00e9riale et \u00e0 renforcer la mani\u00e8re dont elles exigent, \u00e9valuent et reconnaissent la performance sur le terrain.<\/em><\/p>\n\n<p class=\"wp-block-paragraph\">Si vous souhaitez \u00eatre <a href=\"https:\/\/the-change-society.com\/pulse-method\/\">accompagn\u00e9 lors de vos projets de transformation<\/a>, nous vous invitons \u00e0 <a href=\"https:\/\/calendar.app.google\/UD8B52srFUiS7Vyj6\">planifier un rendez-vous avec le bureau de The Change Society.<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Pourquoi le taux de r\u00e9ussite des transformations de 30&nbsp;% de McKinsey n\u2019a pas boug\u00e9 en quinze ans, analys\u00e9 \u00e0 travers la distinction de Bridges entre changement et transition, et ancr\u00e9 dans une mission r\u00e9elle (anonymis\u00e9e) o\u00f9 une r\u00e9organisation a \u00e9t\u00e9 annonc\u00e9e du jour au lendemain par note de service, sans aucune transition pr\u00e9vue.<\/p>","protected":false},"author":2,"featured_media":2066,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"_monsterinsights_skip_tracking":false,"_uf_show_specific_survey":0,"_uf_disable_surveys":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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