{
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  "capturedAt": "2026-10-29T10:31:13.625Z",
  "sha256": "13e93df3e3d8ad0d9500bbf955f2ee61cdeb387a05058a9179d708670879b070",
  "work": {
    "type": "RDN",
    "kind": "note",
    "key": "schiller-2017",
    "id": "TAP-RDN-0059",
    "locale": "en",
    "path": "/research/schiller-2017/",
    "title": "TAP reading note: The impact of reduced worktime on sleep and perceived stress - a group randomized intervention study using diary data",
    "description": "With retained salary and funding for additional staff, reduced worktime was associated at 18 months with approximately 23 more minutes of diary-reported sleep on workdays and less perceived stress and sleepiness. The effect concerns this combined arrangement, not every possible four-day-week policy.",
    "rights": "© The Allostasis Project. All rights reserved. Reproduction or adaptation requires separate permission, subject to applicable legal exceptions.",
    "version": "1.0",
    "updatedAt": "2026-10-29",
    "editorial": {
      "contentType": "evidence-review",
      "reviewState": "draft",
      "reviewedAt": null,
      "reviewedVersion": null,
      "updatedAt": "2026-10-29",
      "version": "1.0",
      "byline": "team",
      "author": null,
      "reviewer": null,
      "workflow": {
        "ai": {
          "usage": "used",
          "system": "OpenAI Codex",
          "scope": "Assisted source comparison, evidence extraction and bilingual research-note preparation. The materials consulted and unresolved scientific issues are specified in each note.",
          "version": "1.0",
          "tasks": [
            "Source comparison and evidence extraction",
            "Bilingual research-note drafting and editorial comparison"
          ]
        }
      },
      "revisions": [
        {
          "date": "2026-10-29",
          "version": "1.0",
          "description": "Added the worktime study, including retained salary, extra staffing, nonrandom allocation and analysis selection."
        }
      ]
    },
    "original": {
      "id": "schiller-2017",
      "title": "The impact of reduced worktime on sleep and perceived stress - a group randomized intervention study using diary data",
      "authors": "Schiller H · Lekander M · Rajaleid K · Hellgren C · Åkerstedt T · Barck-Holst P · Kecklund G",
      "journal": "Scandinavian Journal of Work, Environment & Health",
      "year": "2017",
      "url": "https://doi.org/10.5271/sjweh.3610",
      "doi": "10.5271/sjweh.3610",
      "pmid": "27942734"
    },
    "references": [
      {
        "id": "schiller-2017",
        "title": "The impact of reduced worktime on sleep and perceived stress - a group randomized intervention study using diary data",
        "authors": "Schiller H · Lekander M · Rajaleid K · Hellgren C · Åkerstedt T · Barck-Holst P · Kecklund G",
        "journal": "Scandinavian Journal of Work, Environment & Health",
        "year": "2017",
        "url": "https://doi.org/10.5271/sjweh.3610",
        "doi": "10.5271/sjweh.3610",
        "pmid": "27942734"
      }
    ],
    "sections": [
      {
        "id": "finding",
        "title": "What the study found",
        "paragraphs": [
          "With retained salary and funding for additional staff, reduced worktime was associated at 18 months with approximately 23 more minutes of diary-reported sleep on workdays and less perceived stress and sleepiness. The effect concerns this combined arrangement, not every possible four-day-week policy."
        ]
      },
      {
        "id": "limits",
        "title": "Scope & limitations",
        "paragraphs": [
          "33 workplaces and 580 analysed participants: 354 intervention and 226 control, 76% women. Of 919 initially included, 98 withdrew after allocation and further analysis criteria were applied.",
          "One workplace was assigned nonrandomly to control because of recruitment conditions. Post-allocation adherence/follow-up criteria mean this is not a complete intention-to-treat analysis. Self-reported diaries, clustering and selective retention constrain interpretation."
        ]
      },
      {
        "id": "sample",
        "title": "Population & sample",
        "paragraphs": [
          "33 workplaces and 580 analysed participants: 354 intervention and 226 control, 76% women. Of 919 initially included, 98 withdrew after allocation and further analysis criteria were applied."
        ]
      },
      {
        "id": "exposure",
        "title": "Exposure or intervention",
        "paragraphs": [
          "Planned 25% worktime reduction with salary retained, extra hiring funds and restrictions on additional paid work; usual arrangements in controls. Actual reduction was about 20% in diary weeks and 25% in monthly payroll records."
        ]
      },
      {
        "id": "outcomes",
        "title": "Outcomes",
        "paragraphs": [
          "Diary sleep, sleepiness and perceived stress; no common objective physiological-recovery endpoint."
        ]
      },
      {
        "id": "duration",
        "title": "Time frame",
        "paragraphs": [
          "18-month intervention follow-up."
        ]
      },
      {
        "id": "funding",
        "title": "Research funding",
        "paragraphs": [
          "Not yet verified against the full text."
        ]
      },
      {
        "id": "conflicts",
        "title": "Research conflicts of interest",
        "paragraphs": [
          "Not yet verified against the full text."
        ]
      },
      {
        "id": "basis",
        "title": "Reading scope",
        "paragraphs": [
          "Original full-text workplace allocation, sample flow, implementation, results and limitations. All cluster/attrition sensitivity analyses remain to be checked."
        ]
      }
    ]
  }
}