{
 "name": "shiftpatterngenerator.co.uk Shift Work Prevalence",
 "title": "Shift Work Prevalence",
 "url": "https://shiftpatterngenerator.co.uk/datasets/shift-work-prevalence/",
 "csv": "https://shiftpatterngenerator.co.uk/datasets/shift-work-prevalence.csv",
 "markdown": "https://shiftpatterngenerator.co.uk/datasets/shift-work-prevalence/index.md",
 "computed_at": "2026-10-22",
 "license": "https://shiftpatterngenerator.co.uk/terms",
 "headline": "The median published figure in the Shift Work Prevalence is 22.50 percent across 2 sources' own pages (range 19 to 26 percent), read 12 October 2026.",
 "quotes": [
  "The median published figure in the Shift Work Prevalence is 22.50 percent across 2 sources' own pages (range 19 to 26 percent), read 12 October 2026.",
  "2 of the 7 named sources read in full publish a figure; 5 publish none, read 12 October 2026.",
  "The median is unchanged since 26 September 2026 (was 22.50 percent across 2)."
 ],
 "citation": "\"shiftpatterngenerator.co.uk Shift Work Prevalence\", updated 2026-10-22, https://shiftpatterngenerator.co.uk/datasets/shift-work-prevalence/.",
 "changed_since": {
  "since": "2026-09-26",
  "previous_median": 22.5,
  "delta": 0,
  "direction": "unchanged",
  "sentence": "The median is unchanged since 26 September 2026 (was 22.50 percent across 2)."
 },
 "national": {
  "unit": "%",
  "n": 2,
  "median": 22.5,
  "min": 19,
  "max": 26,
  "p25": null,
  "p75": null,
  "mean": 22.5,
  "units": {
   "%": 2
  },
  "published_sources": 2,
  "named_sources": 8,
  "read_sources": 7,
  "not_published": 5,
  "published_share": 0.286
 },
 "by_axis": {},
 "rows": [
  {
   "source": "Greater London Authority - evening and night workers in London",
   "url": "https://data.london.gov.uk/blog/evening-and-night-workers-in-london/",
   "figure": "26%",
   "value": 26,
   "unit": "%",
   "vat": null,
   "axis": {},
   "retrieved_at": "2026-10-12",
   "quote": "Around 1 in 4 (26%) people working in London were E&N workers in 2022.",
   "source_class": "primary-government",
   "text_sha256": "0aafe1c0cc8aa49e0766e6645fc21df7a89003c524a8cb430b1546c5716597ab"
  },
  {
   "source": "TUC - the health and safety impacts of night working",
   "url": "https://www.tuc.org.uk/research-analysis/reports/health-and-safety-impacts-night-working",
   "figure": "2017 19%",
   "value": 19,
   "unit": "%",
   "vat": null,
   "axis": {},
   "retrieved_at": "2026-10-12",
   "quote": "In 2017 19% of those in employment were engaged in shift work, 20% of males and 17% of females (ONS, 2018).",
   "source_class": "secondary",
   "text_sha256": "0ef23341a7605f010628b50921f9619089cc170f0e37d256870493a907d1d850"
  }
 ],
 "not_published": [
  {
   "source": "ONS - Labour market overview, UK",
   "url": "https://www.ons.gov.uk/employmentandlabourmarket/peopleinwork/employmentandemployeetypes/bulletins/uklabourmarket/march2026",
   "retrieved_at": "2026-09-12",
   "reason": "every candidate on the page was refused"
  },
  {
   "source": "ONS - HOUR01 SA: actual weekly hours worked (dataset)",
   "url": "https://www.ons.gov.uk/employmentandlabourmarket/peopleinwork/earningsandworkinghours/datasets/actualweeklyhoursworkedseasonallyadjustedhour01sa",
   "retrieved_at": "2026-10-12",
   "reason": "read in full and no accepted figure on the page"
  },
  {
   "source": "HSE - shift work and fatigue: common risks",
   "url": "https://www.hse.gov.uk/humanfactors/topics/shift-workers.htm",
   "retrieved_at": "2026-10-12",
   "reason": "read in full and no accepted figure on the page"
  },
  {
   "source": "HSE - health and safety statistics",
   "url": "https://www.hse.gov.uk/statistics/",
   "retrieved_at": "2026-09-12",
   "reason": "read in full and no accepted figure on the page"
  },
  {
   "source": "TUC - 260,000 more people working at night in past five years",
   "url": "https://www.tuc.org.uk/news/260000-more-people-working-night-past-five-years-finds-tuc",
   "retrieved_at": "2026-09-12",
   "reason": "every candidate on the page was refused"
  }
 ],
 "sources": [
  {
   "url": "https://www.ons.gov.uk/employmentandlabourmarket/peopleinwork/employmentandemployeetypes/bulletins/uklabourmarket/march2026",
   "label": "ONS - Labour market overview, UK",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.ons.gov.uk/employmentandlabourmarket/peopleinwork/earningsandworkinghours/datasets/actualweeklyhoursworkedseasonallyadjustedhour01sa",
   "label": "ONS - HOUR01 SA: actual weekly hours worked (dataset)",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.hse.gov.uk/humanfactors/topics/shift-workers.htm",
   "label": "HSE - shift work and fatigue: common risks",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.hse.gov.uk/statistics/",
   "label": "HSE - health and safety statistics",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://data.london.gov.uk/blog/evening-and-night-workers-in-london/",
   "label": "Greater London Authority - evening and night workers in London",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.tuc.org.uk/research-analysis/reports/health-and-safety-impacts-night-working",
   "label": "TUC - the health and safety impacts of night working",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.tuc.org.uk/news/260000-more-people-working-night-past-five-years-finds-tuc",
   "label": "TUC - 260,000 more people working at night in past five years",
   "license": "the publisher's own terms; quoted for reporting and comment"
  },
  {
   "url": "https://www.ons.gov.uk/employmentandlabourmarket/peopleinwork/earningsandworkinghours",
   "label": "ons.gov.uk",
   "license": "the publisher's own terms; quoted for reporting and comment"
  }
 ],
 "methodology": "Every row is a verbatim sentence read from the named source's own page through our fetch service on the date shown, hash-pinned to the stored read (the sha of the page's visible text; the raw page is mirrored to R2). 2 of the 7 named sources that could be read published a usable figure; 5 published none and are recorded as not published, never filled in; 1 could not be read (blocked, dead or unreachable) and count nowhere. The headline figures (median, minimum, maximum, quartiles) are over ONE figure per source in % (a source's median where its page yielded several accepted sentences), so N counts sources, never sentences; 53 candidate sentence(s) were refused by a reviewer with the reason recorded. The fuller derivation this dataset is chartered to grow into (not yet what the figures above are; they are each source's own published figure as read): the shift-work and night-work counts and shares from the official series, carried release by release with their definitions attached, so a pattern page can open on a measured figure ('5 million shift workers', HSE) rather than an assertion; the derivation is the comparison the publishers do not make - the official count beside the union's own Labour Force Survey analysis and the sub-national reading, each labelled with whose number it is, and the change over time computed on one consistent definition.",
 "embed": "<figure style=\"margin:0;padding:16px;border:1px solid #d9d9d9;border-radius:8px;background:#ffffff;color:#111111;font-family:system-ui,sans-serif;max-width:480px\"><p style=\"margin:0 0 8px;font-size:28px;font-weight:700;color:#111111;background:#ffffff\">22.50 percent</p><p style=\"margin:0 0 8px;font-size:14px;color:#111111;background:#ffffff\">median published figure, Shift Work Prevalence, across 2 sources, read 12 October 2026</p><figcaption style=\"font-size:12px;color:#444444;background:#ffffff\"><a href=\"https://shiftpatterngenerator.co.uk/datasets/shift-work-prevalence/#median\" style=\"color:#1a4fd6;background:#ffffff\">Source: shiftpatterngenerator.co.uk Shift Work Prevalence</a></figcaption></figure>"
}
