Anti-fatigue mats are designed to lessen tiredness caused by standing for long periods on hard surfaces. When considering their use, there are several factors that should be considered at the same time. Work should be organised so that the worker has some choice about his/her working position and an opportunity to change position frequently. A workplace that includes a footstool increases the variety of body positions and encourages frequent changes between them.
Footwear is a factor which may further reduce the harmful effects of prolonged standing. Shoes should provide cushioning for both the arch and heel while providing comfort to the wearer.
The type of flooring used in the workplace has an equally important influence on comfort, especially on tender feet. Hard, unyielding floors, like concrete, are the least comfortable surfaces to work on. Wood or cork – anything that provides some elasticity – is gentler on the feet. More than that, softer floor coverings reduce fatigue and improve safety by reducing slips and falls on slippery floors.
Anti-fatigue mats absorb the shock due to walking and this cushioning effect reduces foot fatigue. However, it is important to understand that for oily or greasy areas some mats are more suitable than others. Mats with smooth surfaces are suitable for dry areas. Mats with drainage holes are designed primarily for wet areas and mats made with rubber are the best option for areas where grease is present. The use of matting also requires caution because mats can lead to tripping and falling accidents when installed improperly.
Another type of floor covering, namely anti-slip matting, is useful in increasing foot comfort and safety. However, workers may experience a feeling of burning in the feet because the non-slip properties of anti-slip matting causes their shoes to grab suddenly on the flooring, making their feet slide forward inside the shoes. Friction inside the shoes produces heat which creates soreness. Shock-absorbing insoles can minimise this discomfort.
HEARING PROTECTORS
Hearing protectors are designed to reduce exposure to loud noise and there are three main types available.
Ear plugs are inserted to block the ear canal and are sold as disposable products or reusable plugs. Custom moulded ear plugs are also available.
Ear muffs consist of soft ear cushions that fit around the ear and hard outer cups. They are held together by a headband.
Canal caps have flexible tips that act as caps which plug the ear canal. They do not extend into the ear canal, only close the ear opening. Therefore they do not offer as much protection as ear plugs or ear muffs.
The choice of hearing protectors depends on a number of factors including the level of noise, comfort and the suitability of the hearing protectors for both the worker and his environment. Most importantly, the hearing protector should provide the desired noise reduction.
Ear muffs are more desirable for intermittent noise, since the removal and reinsertion of ear plugs may be inconvenient. Canal caps are also ideal for situations where hearing protection must be taken on and off frequently. They are not designed for continuous wear.
Ear plugs are lightweight and portable, less expensive than muffs and more comfortable in hot, humid work areas. However, they provide less protection than some muffs and should not be used in areas where noise levels exceed 105 decibels. They are not as visible as muffs and a supervisor cannot readily check to see if workers are wearing them. They must be properly inserted to provide adequate protection.
Ear muffs can vary with respect to the material and depth of the dome and the force of the headband. The deeper and heavier the dome, the greater the low-frequency attenuation provided by the protector. Ear muffs can usually provide greater protection than plugs, although this is not always true. They are easier to fit, generally more durable than plugs and they have replaceable parts. However, they are more expensive and often less comfortable than plugs, especially in hot work areas.
The human aspects of hearing protection are particularly important. It is therefore a good idea for the employer to provide a number of different types of hearing protection from which workers can choose, keeping in mind any safety or hygienic reasons for not providing a particular kind of protector. For example, ear plugs which are used in the plant setting where people reuse them throughout the day, often reinserting them with dirty fingers, can introduce dirt and bacteria into the ears, causing ear infections.
