Breathing problems deserve medical attention whether their cause is occupational, personal or still uncertain. A pattern of wheezing after particular shifts, coughing during cleaning or struggling more on days spent near a process can be useful evidence. It does not, by itself, establish a diagnosis or prove that an employer is legally responsible. The immediate priorities are appropriate care, preventing further harmful exposure and preserving an honest record of what happened.
This guide concerns possible personal injury claims in England and Wales. It explains how to connect substances, tasks, symptoms and workplace controls without asking you to diagnose yourself. Its practical tool is a work and symptom calendar that can support conversations with clinicians, occupational health professionals and a solicitor. Other jurisdictions, employment disputes and benefit schemes require separate consideration.
If breathing becomes severely difficult, or you have other emergency symptoms, seek urgent help rather than completing a diary. The NHS guidance on shortness of breath explains when to call 999 and when to contact NHS 111. Do not deliberately repeat an exposure, stop prescribed treatment or remain in an unsafe area to gather evidence.
Substances and tasks: identify the work behind the job title
Describe an ordinary shift before naming a suspected cause
A job title is a starting point, not an exposure history. A production operative might weigh powders, empty filters, clean a mixer, package finished goods and spend breaks beside another process. Each activity could involve different substances and controls. Write the sequence of a normal shift, then mark the tasks that changed before symptoms began or became more noticeable.
Include preparation and cleaning. People often remember the main manufacturing operation but overlook tipping waste into bins, brushing work surfaces, changing extraction bags or entering a room after spraying has finished. A task lasting a few minutes may be relevant even when it occupied only a small part of the working day. Record its frequency rather than describing it as constant exposure.
Identify where the work happened. Useful details include room size, nearby processes, open doors, enclosed booths, outdoor conditions and how many people worked in the area. Your observations do not replace an occupational hygiene assessment, but they help a specialist understand what should be investigated. A simple sketch may communicate the arrangement better than an elaborate narrative.
Preserve names without guessing the chemistry
Record product names, manufacturers, label photographs, batch details and any safety data sheets you already hold lawfully. A familiar trade name may cover different formulations over time. If your recollection is only a colour or nickname, say so. Do not turn “the blue cleaning liquid” into an identified chemical because an online search suggests a likely match.
Distinguish products introduced into the workplace from substances generated by the work itself. Dust created by sanding, fumes from a process and mist from equipment may not have arrived in a labelled container. Note the underlying material and operation. A safety data sheet for the original product may not answer every question about what workers inhaled during processing.
Where historic information is incomplete, preserve the clues rather than trying to resolve everything yourself. Purchase records, supplier correspondence, maintenance manuals, photographs of containers and a colleague's independent recollection can be checked against one another. Your solicitor can consider proportionate requests for records, while a competent expert decides which details matter medically and technically.
Separate direct work from nearby exposure
You may have been affected by a process you did not operate. Record where you stood, what separated you from it and whether air appeared to move between areas. Include routine access through production rooms, shared changing facilities and maintenance work. Avoid assuming that a different employer's machine could not matter simply because it was outside your assigned duties.
Conversely, being employed at a site using a hazardous substance does not establish that you encountered a relevant amount. A worker based in a separate building may have a different history from someone cleaning the process equipment. Explain actual movements and contact. Precision supports a credible investigation more effectively than applying the highest conceivable exposure to every person on site.
If several businesses were involved, identify who employed you, who controlled the process and who supervised the specific task. These can be different organisations. The separate guide to tracing harmful exposure across several employers helps organise that history without prematurely choosing a defendant.
Symptom pattern: record observations, not a self-diagnosis
Keep the timing of symptoms distinct from the timing of work
Record when symptoms began, when they were strongest and when they eased. Include symptoms during the evening or night after a shift. A diary limited to the moment you leave work may miss an important pattern. Describe the symptom in ordinary language: coughing, wheezing, chest tightness, unusual breathlessness or disturbed sleep, rather than assigning a medical label you have not been given.
Note workdays, rest days, holidays and periods of sickness absence. Improvement away from work can help clinicians investigate, but it is not a stand-alone proof of occupational disease. Other things may change during a holiday, including infections, physical activity, accommodation and exposure outside work. Keep these details proportionate and factual instead of treating every variation as supporting one conclusion.
A persistent problem can also remain serious even when a weekend makes little difference. Different conditions have different patterns, and longstanding symptoms may not resolve quickly. Do not abandon medical advice or assume that work is irrelevant merely because a short break did not produce a dramatic recovery. Give the clinician the actual history and let them interpret it.
Distinguish new asthma from asthma worsened by work
The HSE overview of asthma distinguishes occupational asthma associated with workplace sensitisation from a broader category of asthma aggravated by workplace conditions. The distinction matters because pre-existing asthma does not automatically exclude a work connection. It also matters because different mechanisms require different clinical and legal analysis.
Tell the clinician about childhood symptoms, previous inhalers, allergies and earlier breathing investigations. Concealing an old diagnosis makes the assessment less reliable and may undermine a claim later. A pre-existing condition might explain all, some or none of the present deterioration. The question is what happened in your circumstances, rather than whether your medical history was completely clear beforehand.
Avoid translating a tentative clinical note into a final conclusion. “Possible occupational asthma”, “work-related symptoms” and a confirmed diagnosis are not interchangeable. Keep referral letters and reports in their original form. If wording is unclear, ask the treating professional what is confirmed, what remains under investigation and what further information they require.
Include functional consequences with useful comparisons
A symptom diary becomes more informative when it describes everyday consequences. Record whether you paused while climbing the same stairs, woke coughing, needed help carrying an ordinary load or could not complete a usual activity. Use familiar comparisons and approximate duration. There is no need to invent a numerical severity score unless a clinician asks you to use one.
Include better days and activities you can still do. Someone may manage a gentle walk while struggling with strenuous work, and those facts can coexist. An account that describes every activity as impossible despite evidence of substantial function will create avoidable confusion. The aim is a realistic picture of variability, not the most alarming description available.
Separate symptoms from decisions made for other reasons. You may stop overtime because of breathlessness, childcare, a production slowdown or a combination. Record the actual reasons when known. This helps distinguish medical effects from wider changes in your income and routine, which becomes important if the claim includes loss of earnings or future work restrictions.
Controls and testing: what happened in practice?
A written assessment is only part of the picture
An employer's risk assessment can identify substances, exposed workers and intended controls. Compare its description with the task you actually performed. Note whether it covers cleaning, maintenance, unusual production runs and workers in neighbouring areas. A document may be relevant without fully describing the circumstances that produced your symptoms.
Keep versions and dates if available. A new assessment introduced after complaints may show that conditions changed, but it does not automatically prove that the earlier arrangements were negligent. Equally, an old document signed by workers does not establish that every control remained effective. A fair chronology should distinguish what the paperwork said from what people observed at the time.
Record training in concrete terms. Was a process demonstrated? Were you told when to stop work, how to report equipment problems and what protection was required? Could instructions be understood and followed during the actual workload? A signature on a training sheet is evidence of an event, but the content and practical implementation may need further examination.
Describe extraction, enclosure and ventilation accurately
For extraction, record the equipment's location, whether it was connected, whether it appeared to operate and any faults you reported. Explain how you know: a disconnected hose is a direct observation, while an assumption that the filter was unsuitable may require expert investigation. Distinguish visible dust escaping from your interpretation of the technical reason.
General ventilation and source extraction perform different jobs. An open window does not tell an expert how effectively a hazardous substance was captured at the point it was generated. Describe the arrangement without declaring it compliant or non-compliant. Photographs lawfully taken at the relevant time can help, but a later image should be labelled with its later date.
Maintenance records, fault reports and inspection certificates may connect your experience to documented equipment history. Tell the solicitor what records you believe existed and who held them. Do not access an employer's restricted systems, remove confidential files or dismantle equipment to obtain evidence. Lawful preservation and targeted requests are more useful than material collected through an unsafe or unauthorised investigation.
Record respiratory protection beyond “a mask was supplied”
Different respiratory protective equipment is designed for different risks and working conditions. Record the make or description, how it was selected, whether training was provided and whether replacement parts were available. If tight-fitting equipment was used, note any fit-testing arrangements and changes in model. Do not assume that one successful test covered every item subsequently issued.
Explain practical problems such as interference with other protective equipment, damage, missing components, difficulty communicating or pressure to remove protection during a task. Include when these problems were reported and the response. These details allow an expert to assess the system of work; they do not make every discomfort a legal breach or excuse inaccurate recollections about use.
If you sometimes did not use equipment, be candid about the circumstances. The reasons, instructions, availability and supervision may all matter. Omitting an awkward fact rarely improves the eventual assessment. The legal consequences depend on the evidence and should not be reduced to either “a mask was offered, so no claim” or “the worker became ill, so protection failed”.
Understand what monitoring can and cannot establish
Exposure monitoring measures conditions through a particular method, location and period. Ask what process was running, who wore any sampling device and whether the result related to your task. A general room sample from a quiet day may answer a different question from personal sampling during cleaning. Do not calculate a personal exposure level from incomplete figures.
Health surveillance concerns workers' health rather than simply measuring substances in the air. The HSE guidance on COSHH health surveillance explains when a planned programme may be required and gives lung function as an example of what may be assessed. Whether suitable surveillance was necessary in a particular workplace depends on the relevant risks.
Keep appointment invitations, completed questionnaires, results and referral recommendations. Record whether concerns were raised and followed up. A normal historical test may be relevant but does not necessarily decide a later diagnosis; an abnormal test does not identify its cause on its own. Clinical interpretation should consider the test quality, timing and wider medical evidence.
Alternative exposures: completeness strengthens the investigation
Include previous jobs and work outside the main employer
A useful occupational history includes temporary placements, apprenticeships, weekend work, military service and self-employment where relevant. Record approximate dates and distinguish firm information from uncertain recollection. An early job can be important even when it ended long before symptoms became obvious. Do not assume the most recent employer is necessarily responsible for the entire condition.
Where two jobs overlapped, show that clearly. Different exposures on the same day may complicate a symptom pattern and influence the records a clinician requests. A calendar that marks only one workplace can accidentally create a misleading association. Explain travel between sites, casual work and periods spent helping a family business if they involved plausible respiratory exposure.
An employer's closure does not remove the historical facts. Preserve former names, addresses, payslips and colleagues' contact details. Identification and insurance investigations may be possible even after many years. These are legal enquiries rather than reasons to delay medical assessment or to assume that only an employer still trading can be considered.
Record domestic and leisure activities without attributing blame
Home renovation, woodworking, animal care, hobbies and environmental conditions can be relevant to a respiratory history. List what you actually did, how often and when. The purpose is to help distinguish potential causes or aggravating factors, not to blame you for ordinary life or make assumptions from a hobby's name.
Give an accurate smoking and vaping history if asked. Record dates and approximate use as honestly as you can, including periods when you stopped. These details can affect medical interpretation, but their significance differs between conditions. A solicitor should not dismiss every respiratory claim because someone smoked, nor suggest that smoking is irrelevant to every possible diagnosis.
Illnesses and medication changes can also affect how a diary reads. A respiratory infection during a holiday, for example, may obscure whether symptoms normally improve away from work. Note the infection and any clinical advice. Do not alter the diary to create a cleaner pattern; real histories often contain overlapping influences that require careful interpretation.
What a civil claim must establish
Exposure, breach, injury and causation are separate questions
A claim usually requires evidence of a duty, a failure to take reasonable care, a relevant injury and a causal connection to the alleged failure. Finding a hazardous substance at work answers only part of that investigation. The expected precautions depend on the process, risk, knowledge and circumstances at the relevant time.
Health and safety requirements and guidance can inform the assessment, but a breach does not automatically create a successful civil damages claim. The applicable legal framework, including the date of exposure, needs review. Equally, the absence of enforcement action does not establish that working conditions were safe or that a civil claim cannot succeed.
Medical and technical experts may address different questions. A respiratory physician may assess diagnosis and likely causes; an occupational hygienist may examine substances, exposure and control arrangements. The evidence must fit together. A persuasive account of poor ventilation cannot substitute for evidence that the condition claimed was caused or worsened in a legally relevant way.
Time limits need attention before the investigation is complete
Under the Limitation Act 1980, personal injury claims generally have a three-year period linked to accrual or the relevant date of knowledge, if later. Disease cases can involve difficult questions about when significant injury and its possible connection to work were known or reasonably discoverable. Diagnosis is not automatically the starting date in every case.
Special rules and exceptions can apply, including for children and people lacking the relevant capacity, and courts have a discretion in some late claims. None should be treated as a reason to wait. Ask for individual advice promptly and provide earlier consultations, occupational health discussions and correspondence mentioning a possible work connection.
Reporting symptoms, starting a grievance, requesting records or discussing settlement does not itself issue court proceedings. Ask the solicitor to identify the deadline and what must happen to protect the position. Employment rights and benefit applications may have separate time rules. This article concerns the civil injury claim and does not calculate those other deadlines.
Practical asset: a work and symptom calendar
Set up one page for each week
Use a notebook or a simple digital table that you can maintain consistently. Date entries when you make them and distinguish a same-day note from a later reconstruction. A brief accurate entry is usually more helpful than a detailed account completed months afterwards without identifying that delay. Preserve original entries when adding a clarification.
| Calendar field | What to record | Useful distinction |
|---|---|---|
| Date and shift | Start, finish, overtime and location | Actual hours versus usual hours |
| Main tasks | Process, material and approximate duration | Direct work versus nearby work |
| Controls | Extraction, enclosure and protection used | Observed condition versus assumption |
| Symptoms | Type, onset, duration and daily effect | During shift versus later that night |
| Treatment | Prescribed treatment taken and appointments | Clinician's instruction versus personal choice |
| Other influences | Infection, relevant hobby or unusual activity | Known fact versus possible explanation |
| Report made | Person told, date and response | Verbal conversation versus written reply |
| Supporting item | Photo, rota, message or document reference | Original date and where it is stored |
There is no need to create a medical testing regime yourself. If a clinician asks for measurements, follow their instructions and record them in the format requested. Do not change your exposure or medication to make a comparison more dramatic. The calendar supports appropriate assessment; it is not an experiment or a substitute for professional supervision.
Labelled hypothetical: a changing production line
Suppose a worker develops coughing after moving from packing sealed goods to weighing a powdered ingredient. The worker notices symptoms on some evenings, while a holiday coincides with a chest infection. A careful calendar records the new task, relevant shifts, evening symptoms and infection. It does not state that the holiday disproved a work connection or that the powder has been conclusively identified as the cause.
The worker also notes that extraction was unavailable for part of two shifts and that a supervisor moved them temporarily to another area. Those entries identify records worth seeking: maintenance reports, rotas and the reassignment message. A clinician can assess the health pattern, while a solicitor can investigate the circumstances without presenting the diary as a medical conclusion.
This example is hypothetical, not an AJ Solicitors case or an illustration of a promised outcome. Its value lies in showing how several kinds of evidence can be kept separate. Even a clear sequence of task change and symptoms may need further medical and technical investigation before responsibility can be assessed.
Prepare a short appointment summary from the calendar
Before an appointment, extract the main dates rather than presenting an unexplained stack of entries. Identify the first symptoms, major task changes, important absences, treatment changes and your current concerns. Bring the underlying diary so the professional can examine details if needed. Do not replace the original material with a summary that removes inconvenient exceptions.
Write down questions you want answered. Useful examples include whether further investigation is indicated, what information about the process would help and what precautions or work restrictions should be discussed with occupational health. Ask who will coordinate follow-up. The answers may affect both safe work arrangements and which documents are worth preserving.
Where the history is extensive, create a one-page employment chronology alongside the weekly calendar. The chronology explains the years; the calendar explains recent patterns. Keeping these functions separate avoids expecting a few weeks of notes to reconstruct an entire working life or expecting an old job list to describe current symptoms adequately.
Keep work decisions and loss records connected to the evidence
Record changes in duties and earnings
If hours or duties change, retain the written arrangement, review dates and payslips before and after the change. Explain whether the change followed clinical advice, an employer's precaution or your own concern. These are different circumstances. A pay reduction may be relevant, but it should be linked to the respiratory condition rather than assumed from its timing alone.
Keep evidence of reasonable treatment-related expenditure and additional assistance. Describe who provided help, what they did and how your needs changed. Avoid valuing every ordinary household task as new care or treating all expenditure during illness as recoverable. A solicitor can advise which losses are supported and how they should be presented.
Discuss employment decisions with the appropriate advisers before resigning or abandoning a workable adjustment. The injury claim should reflect your actual health and reasonable choices, not drive unsafe attendance or unnecessary unemployment. A personal injury retainer may not include employment advice, so confirm the scope if dismissal, disability adjustments or workplace treatment become separate concerns.
Seek advice with an incomplete but organised file
You do not need to identify every chemical or obtain every historical record before asking for advice. Provide what you know, mark the gaps and explain any approaching deadline. An organised first account lets the solicitor decide which uncertainties are central and which can be explored later. Waiting for a perfect pack can lose valuable time.
For the service enquiry, use AJ Solicitors' industrial disease claims page and ask whether the particular respiratory condition and exposure history fall within its accepted work. AJ Solicitors works on a private-fee basis and does not offer legal aid. Ask for the proposed scope, costs and disbursement arrangements in writing rather than assuming another firm's funding model applies.
If diagnosis followed retirement, the guide to occupational illness diagnosed after retirement addresses the historical record problem. If building work is central, construction dust records worth preserving provides a task-specific record structure. Both complement the calendar without replacing medical assessment or individual advice on limitation.
Frequently asked questions
1. Does coughing after every shift prove my job caused a lung condition?
No. Repeated timing is worth reporting and recording, but a clinician must assess possible diagnoses and other explanations. A solicitor must separately examine exposure, precautions and legal causation. Keep the days when you did not cough as well as those when you did. The pattern is more useful when it includes exceptions, treatment changes and activities away from work.
2. Can childhood asthma matter even if it was quiet for years?
Yes. Tell the treating clinician about childhood symptoms, earlier medication and any long symptom-free period. Work may aggravate an existing condition, or a different explanation may emerge. The old history does not automatically defeat a claim, but concealing it can distort the assessment. Obtain relevant records where possible and let the medical expert distinguish the earlier condition from the present problem.
3. Should I buy a device to test my breathing at home?
Ask your clinician before starting a measurement programme. The appropriate device, technique, frequency and interpretation depend on the clinical question. Unsupervised numbers may be difficult to interpret and should not lead you to change medication or expose yourself deliberately. If monitoring is recommended, preserve the instructions and complete the records honestly, including missed readings or technical problems.
4. What if symptoms appear only after I get home?
Record the interval between the shift and symptoms, along with what happened during the evening. Delayed symptoms can be relevant, but timing alone cannot establish their cause. Include night waking and next-day effects when they occur. Tell the clinician about the work process rather than assuming that symptoms outside working hours must be unrelated to the job.
5. Is a safety data sheet enough to identify my exposure?
It is a useful starting point, particularly if it relates to the correct product and period. It may not describe every substance generated during processing or establish how much you inhaled. Keep the sheet's version date and connect it to the task. A technical expert may need equipment information, process details and monitoring evidence before drawing conclusions about exposure.
6. Can I use photographs taken by a colleague?
Potentially, if they were obtained lawfully and the colleague can explain when and where they were taken. Preserve the original files and avoid editing away context. Tell the solicitor whether the images show your actual working period or a later arrangement. Do not ask someone to enter restricted areas or breach confidentiality to produce more dramatic evidence for you.
7. My employer says the air test passed; does that settle the issue?
Not necessarily. The significance depends on what was measured, where, when and during which activities, together with the relevant risk and method. Preserve the complete report if available, not only a summary sentence. A specialist may need to compare the sampled conditions with your work. Equally, do not dismiss a relevant result simply because it does not support your initial suspicion.
8. Should I include cleaning jobs that took only a few minutes?
Yes, if they involved relevant dust, fumes, mist or other possible respiratory exposure. State their approximate duration and frequency rather than inflating them into full-shift work. Emptying equipment or disturbing settled material can present a different situation from operating a closed process. A complete task sequence helps an expert decide whether those short activities deserve closer investigation.
9. What should I do if my employer changes the process after I complain?
Record the date, the change and any explanation given. Keep earlier documents and distinguish them from the new arrangement. A change may improve safety and may be relevant to the history, but it is not automatically an admission of negligence. Continue following clinical advice and report any remaining concerns through the appropriate workplace process rather than resisting improvements for evidential reasons.
10. Will an occupational health assessment decide my compensation claim?
Usually it serves a different purpose, such as assessing fitness for work, adjustments or referral needs. Its observations can be important evidence, but it may not answer every question about legal causation or future loss. Read the assessment carefully, correct factual errors through the proper process and preserve the original report alongside any clarification or later clinical evidence.
11. Must I tell the solicitor that I smoke or used to smoke?
Yes. Give an accurate account, including approximate dates and changes in use. Smoking history can matter differently for different respiratory conditions, and a medical expert needs complete information. It does not automatically eliminate every occupational claim. The solicitor can assess the evidence properly only if potentially relevant alternative or contributing factors are disclosed from the beginning.
12. Can a worker in the next room be exposed too?
Possibly, depending on the layout, process and movement of contaminated air or materials. Describe the rooms, connecting openings and your actual movements without guessing exposure levels. Someone who operated the process and someone in an adjacent office may have very different histories. A diagram, dated photographs and independent witness accounts can help a technical expert evaluate the arrangement.
13. What if I cannot remember a product's exact name?
Record what you genuinely remember, such as its use, container, supplier or approximate period, and label uncertainty. Do not select an internet product merely because its packaging looks similar. Old purchase records, safety documents and colleagues may provide additional clues. Your solicitor can consider targeted enquiries once the possible relevance and likely holder of the missing information are clearer.
14. Does normal breathing between episodes mean there is no claim?
Not necessarily, but the diagnosis and consequences still require medical assessment. Some symptoms vary, and the significance of symptom-free periods depends on the condition being investigated. Include those periods honestly in your records. A claim should reflect the actual frequency, severity and impact of any established injury, rather than assuming that a fluctuating problem is either trivial or permanently disabling.
15. Should I wait until the hospital gives a final diagnosis before seeking legal advice?
You can seek legal advice while investigations continue, especially if symptoms or a possible work connection have been known for some time. The solicitor can assess limitation and identify records to preserve without pretending the diagnosis is settled. Waiting for every test may create avoidable difficulties. Keep the legal adviser informed when referrals, results or clinical opinions change.
16. How should I record a verbal complaint to a supervisor?
Make a dated note of when the conversation occurred, who was present, what you reported and the response you remember. Identify the note as your account rather than a verbatim transcript unless it genuinely is one. Preserve any follow-up message or change in duties. Avoid adding later medical conclusions to a historical complaint as though you knew them at the time.
17. Can I continue working while a respiratory claim is investigated?
That depends on medical advice, the work risks and any suitable arrangements, not on a requirement imposed by the claim itself. Discuss restrictions and controls with the appropriate professionals and employer. Keep records of what was agreed and reviewed. Do not continue unsafe exposure to protect income without seeking help, or stop suitable work solely because you think absence strengthens the claim.
18. What if several colleagues also have breathing complaints?
Their experiences may justify investigation, but each person's symptoms, diagnosis and exposure need individual assessment. Preserve names and contact details with appropriate consent, and allow colleagues to describe their own observations independently. Avoid coordinating identical accounts or treating a group of complaints as proof of a single disease. Shared workplace evidence can be useful without erasing differences between workers.
19. Can a retired worker still use a symptom calendar?
Yes, although the calendar will describe current symptoms, treatment and function rather than current workplace exposure. Pair it with a separate historical employment chronology. The absence of recent work does not automatically exclude a condition associated with earlier exposure. Medical advice and an early limitation assessment remain important, particularly where symptoms or occupational concerns were documented before retirement.
20. What is the most useful first document to send for an initial assessment?
A concise chronology connecting employers, tasks, symptoms, medical appointments and major changes is usually more useful than an unlabelled collection of attachments. Include key supporting records and identify what remains missing. State any earlier advice about a possible work connection and any existing claim. The solicitor can then explain whether further investigation is appropriate and provide the proposed private-fee scope before work proceeds.
