{
  "title": "Giving your manager a deadline: how much room for uncertainty?",
  "url": "https://www.shr.swiss/blog/annoncer-un-delai-a-son-manager-estimation-ou-certitude-en",
  "language": "en",
  "datePublished": "2025-08-23",
  "publisher": {
    "name": "SHR — Swiss Human Resources",
    "url": "https://www.shr.swiss",
    "address": "Esplanade de Pont-Rouge 9A, 1212 Lancy, Suisse"
  },
  "summary": "A precise date makes coordination easier, but does not guarantee a sound estimate. Research suggests examining past experience before detailing the intended scenario.",
  "section": "Research",
  "topic": "Building an Effective Relationship with Your Manager",
  "place": {
    "name": "Lausanne",
    "region": "Vaud",
    "country": "CH"
  },
  "keyPoints": [
    {
      "heading": "What the literature establishes",
      "point": "Roger Buehler, Dale Griffin and Michael Ross (1994, Journal of Personality and Social Psychology) show across several studies that people tend to underestimate the time needed to complete their own tasks."
    },
    {
      "heading": "A detailed scenario is not enough",
      "point": "Daniel Kahneman and Dan Lovallo (1993, Management Science) offer a theoretical analysis distinguishing an inside view, focused on a project's particular features, from an outside view based on outcomes in comparable situations."
    },
    {
      "heading": "The tempting shortcut",
      "point": "One might conclude that simply adding a buffer to every proposed deadline is enough."
    },
    {
      "heading": "What the evidence cannot promise",
      "point": "Studies of individual estimation do not reproduce every dependency in a collaborative project, and a theoretical analysis is not an intervention trial."
    },
    {
      "heading": "A practical check in Lausanne",
      "point": "In Lausanne, whether in a medtech company, a higher education institution, an international sports organisation or a scale-up in the Lake Geneva region, an exercise in the programme « Construire une relation efficace avec son manager » could involve documenting upcoming timeline estimates before discussing them."
    }
  ],
  "sources": [
    {
      "authors": "Ross",
      "year": "1994",
      "source": "Journal of Personality and Social Psychology"
    },
    {
      "authors": "Lovallo",
      "year": "1993",
      "source": "Management Science"
    }
  ],
  "wordCount": 425,
  "image": "https://www.shr.swiss/img/blog-Training-Building-An-Effective-Relationship-With-Your-Manager-Lausanne-annoncer-un-delai-a-son-manager-estimation-ou-certitude-en.jpg?v=4",
  "translations": {
    "fr": "https://www.shr.swiss/blog/annoncer-un-delai-a-son-manager-estimation-ou-certitude",
    "en": "https://www.shr.swiss/blog/annoncer-un-delai-a-son-manager-estimation-ou-certitude-en",
    "de": "https://www.shr.swiss/blog/annoncer-un-delai-a-son-manager-estimation-ou-certitude-de",
    "it": "https://www.shr.swiss/blog/annoncer-un-delai-a-son-manager-estimation-ou-certitude-it"
  },
  "relatedPages": {
    "programme": "https://www.shr.swiss/formation/relation-avec-son-manager/lausanne",
    "city": "https://www.shr.swiss/formations-ville/lausanne",
    "blog": "https://www.shr.swiss/blog"
  },
  "citationPolicy": "Citation autorisée avec mention « SHR — Swiss Human Resources » et lien vers l'article."
}