Updated: June 2012

     More than 5,000 serious injuries are sustained in offices every year. Many thousands of less serious injuries go unreported and often unrecorded. Office work may be less hazardous than a car plant, but millions of people work in offices, and the health hazards can still leave people disabled for life.
     Cramped, unventilated and badly lit offices are a real source of hazards. Work pressures can also put you at risk. New technology has brought a whole new range of hazards into the office. The office environment may include fumes, eye-strain, more shiftwork and more pressure. Equipment is often added to the office without consideration for the people who use it, nor its effects on noise, heat or space available.
     Cramped conditions not only cause discomfort, but also increase the hazards of office workers tripping over wires or bumping into equipment. Overcrowding is usually worse when the office is in an unsuitable building, but even purpose-built offices can be outgrown and need careful planning to avoid accidents, and ensure that workers' health is not put at risk.
     Electrical safety is as important in offices as in factories. Faulty electrical equipment can cause shock to users and may be a fire hazard. All electrical equipment should be regularly maintained and any unsafe equipment immediately taken out of service. No one other than a trained mechanic should attempt to investigate the internal workings of any piece of equipment.
     Fire precautions are poor in many offices. Fire exits may be locked or obstructed, extinguishers may be old and fire drills, non-existent. Overcrowding increases the hazards by making it more difficult to escape, should a fire occur.
     Many offices are too hot, too cold, draughty and airless. People who work in such conditions talk of always feeling below par and having headaches, lethargy, dry throats and skin problems. Some cannot wear their contact lenses comfortably in the office and many say that their eyes are sore and itchy. In some cases, this general malaise can be identified as sick building syndrome.
     Such offices are likely to be air-conditioned and open-plan, with screens, partitions and banks of filing cabinets blocking the flow of air. They are also likely to be overcrowded and depend on artificial lighting and the jobs done there will be the repetitive type of clerical work which is low status and usually done by women.

Display screen equipment
     Ever since its introduction to the office, the health and safety aspects of Display Screen Equipment Regulations 1992 (DSE) have been the subject of much conjecture. It has been estimated that in the UK there were around 8.5 million workstations in regular use at the end of 1992.
     When the use of DSE began to proliferate in the late 1970s/early 1980s, initial concerns were centred on the belief that there may be a radiation risk, particularly to the unborn child of a pregnant worker. Since then, there has been no confirmed scientific evidence to support this fear. Since the mid 1980s, conditions thought to be caused by intensive keyboard use and affecting the musculoskeletal system began to gain prominence in the UK. The term 'repetitive strain injury' or RSI, now more accurately referred to as work-related upper limb disorders (WRULD), entered the popular vocabulary.
     The possible effects of continual DSE use upon eyes and eyesight has also raised questions from the user population. Employers began to recognise the importance of providing suitable furniture, equipment and job design and began to adopt an ergonomic approach to these issues.

Photocopier and laser printer hazards
     If photocopiers and laser printers are badly positioned, poorly maintained and used frequently or for long runs, there are risks to health, ranging from irritated eyes, nose and throat to dermatitis, headaches and
reproductive and cancer hazards. Proper ventilation and maintenance are essential.
Ozone is a gas produced during the high voltage electrical discharge in photocopiers and laser printers. If you can smell ozone the levels are too high. Ozone breaks down in air quite quickly, though this can be slowed by high humidity, temperature and some effects of office furnishings. Health effects are eye, nose, throat and lung irritation, dermatitis, headaches and nausea, premature ageing and potential reproductive dangers. When mixed with nitrogen oxide in certain proportions it can have an effect on the central nervous system.
Selenium and cadmium sulphide - some copiers use a drum impregnated with these chemicals. The gas they emit, especially when hot, can cause throat irritation and sensitisation to exposed workers. This is mostly a risk to maintenance staff when cleaning or grinding the surface of the drum.
Nitrogen oxide may be produced when there is a spark in electrostatic photocopiers. Symptoms are similar to those produced by carbon monoxide.
Carbon monoxide is produced when toner (containing Carbon Black) is heated in an inadequate air supply. Some copiers can reach half the OEL even in well-ventilated rooms. In poorly ventilated conditions the effects
include headaches, drowsiness, faintness and increased pulse rate. Carbon monoxide can cross the placenta and affect the unborn child.
Toners are generally a mixture of plastic resin and Carbon Black often with other additives. Carbon Black is classified as a nuisance dust (i.e. only mildly toxic in itself), but will contain impurities known to be carcinogens. Toners should be handled with care, protective gloves should be worn, and dust release minimised. Contact with the tongue, i.e. by touching copied papers with a wetted finger, can lead to small growths on the tongue. Other health effects may be irritated eyes, headache and itching skin. Maintenance workers are at risk from repeated exposure which can lead to skin and eye sensitisation.
Ultra violet light photocopier lids should be kept closed when the machine is in use. Ultra violet light can cause eye irritation and burns.
Noise levels can reach up to 65dB (A) for ordinary copiers. Care should be taken in siting copiers with noisy collators as far from workers as possible.
Fire hazards - excessive dust in electrical equipment will cause sparking. Provision of carbon dioxide extinguishers near machines is essential.
Jams - even though most machines cut out when opened, they should be switched off before removing jammed paper. Avoid hot surfaces and wash hands immediately afterwards.
Laser printers - Unlike photocopiers they are usually placed on desktops beside workers. However, they produce ozone like conventional copiers. There must be regular checks on filters, which may need to be replaced as often as once a month.

     Many offices are built on streets where there is constant heavy traffic. Others may be next to a major building site or factory. The increasing use of machinery in offices can make noise levels intolerable. Noise interferes with concentration and makes working stressful. A noise level of 60 dB(A) is thought to be about right for office work, but many offices are much noisier than this. One survey found that 80 per cent of workers in an open-plan office were disturbed by noise. There are several ways to make offices quieter:
      (a) Double-glazing can reduce noise coming in from the street
      (b) Safety Reps can negotiate an agreement with employers to ensure that they will not purchase any equipment which produces more than a certain maximum level of noise
     (c) Acoustic hoods can be purchased for any noisy printers
     (d) The amount of shiny surfaces which reflect noise can be reduced
     (e) Decisions about the number of people, the amount of furniture and equipment to be in any room must take account of the effect on the noise level

     Lighting can cause many problems and consideration must be given to the amount and type of lighting and where desks and working areas are placed in relation to the lighting fitments. In some offices, people work totally in artificial lighting and very far away from windows. Lighting fitments may be broken, flicker or be dirty, and can be inadequate in store rooms and on staircases. Many offices do not have an emergency system for staircases and corridors in the event of a power cut. Some office jobs require extra task lighting to provide sufficient light to do the job well.
     Visual Display Unit Screens (VDUs) are too often placed in offices without any understanding of the importance of avoiding glare and reflection from windows, lights and other screens. This means that the image on screen could be unclear and much harder to read.

Using the law
HASAWA applies to all workplaces including offices. Section 2 says that employers have a general duty to ensure the health and safety of their employees. The Offices, Shops and Railway Premises Act 1963 applies specifically to such workplaces and the Workplace (Health, Safety and Welfare) Regulations 1992 apply to all workplaces, covering overcrowding, temperature, ventilation, lighting, toilets, washing facilities and seating. There are also specific regulations covering Display Screen Equipment and VDUs.

Reprinted from "Health and Safety Essentials" with the kind permission of amicus/Unite

Statute Links:
The Health and Safety (Display Screen Equipment) Regulations 1992
Employment Rights Act 1996
Equality Act 2010
Management of Health and Safety at Work Regulations 1999
Sex Discrimination Act 1975
Workplace (Health, Safety and Welfare) Regulations 1992

Office Health and Safety - HSE Home Page
Back Pain in the Workplace - HSE
Back Pain - Guide to Back Pain - Public and Commercial Services Union
Computer Lighting - Guidance on meeting UK legislation from 1st January 1997 onwards
Display Screen Equipment/VDUs - Should VDU users be given breaks? - HSE
Display Screen Equipment - Guide to Avoiding DSE Health Problems - CWU (Communication Workers Union)
Ergonomics at Work - healthandsafety.co.uk
Health and Safety for New and Expectant Mothers - HSE
Keyboard Countermeasures - Preventing Repetitive Stress Injury - healthandsafety.co.uk
Passive Smoking at Work
- healthandsafety.co.uk
Repetitive Strain Injury - Public and Commercial Services Union
Preventing slips and trips in the workplace - HSE
Sex Discrimination: Your Rights at Work - Equal Opportunities Commission
Slips and Trips - Preventing Slips and Trips in the Workplace - HSE
Slips and Trips FAQs - Frequently Asked Questions - HSE
Slips and Trips Resource Centre - HSE (guidance, posters, Powerpoint presentations, audio and video, tools)
Temperatures - Minimum and Maximum - HSE
The Influence of Computer Monitor Height on Head and Neck Posture
- healthandsafety.co.uk
Toilet Breaks / Rest Breaks - Hazards Magazine   +   Toilet Breaks Case Histories - Hazards Magazine

HandS COSHH Section
HandS Musculoskeletal Disorders Section
HandS Noise Section
HandS Temperatures Section

Aching arms (or RSI) in small businesses - HSE (pdf)
Air, Light and Temperature - London Hazards Centre Factsheet (pdf)
Call Centre Health and Safety - Amicus (pdf)
Dermatitis at Work - Unison (pdf)
Dermatitis in the Workplace - London Hazards Centre Factsheet
The Law on VDUs: An Easy Guide - HSE Book HSG90 (pdf)
VDU Workstation Checklist - HSE (pdf)
Display Screen Equipment (DSE) - Working with VDUs - HSE, INDG36 (pdf
Display Screen Equipment Regulations - London Hazards Centre Factsheet
Guidance: Health and Safety (Display Screen Equipment) Regulations 1992 -  HSE L26 (76pgs pdf)
How to Deal with Sick Building Syndrome - HSE Book HSG132 (32pgs pdf)

Lighting At Work - HSE Book HSG38 (64pgs pdf)
Maintaining Portable Electric Equipment in Low-risk Environments - HSE INDG236REV2 (pdf)
Manual Handling - Lifting and Carrying Safety - IAPA, Canada (pdf)
Manual Handling - Solutions You Can Handle - HSE Book HSG115 (42pgs pdf)
Office Workstation Design - IAPA, Canada (pdf)
Officewise - HSE INDG173 (pdf)
Ozone - Health Hazards and Precautionary Measures - HSE EH38 (pdf)
Photocopier and Laser Printer Hazards - University of Edinburgh (pdf)
Preventing MSDs In The Office - IAPA, Canada (pdf)
Privacy At Work - Amicus/Unite (pdf)
Risk Assessment - Example Assessment for Office-based Business - HSE (pdf)
Seating At Work - HSE Book HSG57 (32pgs pdf)
Sex Discrimination Act 1975 (pdf)
Stress In The Workplace - Amicus/Unite (pdf)
Stress - Managing the Causes of Work-Related Stress -  HSE Book HSG218 (56pgs pdf)
Understanding Ergonomics - Reduce accidents & increase productivity - fit the task to the worker - HSE (pdf)
Ventilation - A Safety Guideline for Your Workplace - IAPA, Canada (pdf, zipped)
Workplace Welfare - Provision of Facilities - toilets, washing, water, changing clothes, meal breaks - HSE
Workplace Health, Safety and Welfare -  temperature, lighting, floors, ventilation, etc  HSE INDG244 (pdf)
Workplace Health, Safety and Welfare. Workplace (Health, Safety and Welfare) Regulations 1992 -
HSE Book L24 (51pgs pdf)