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EmploymEnt, Work, And hEAlth InEquAlItIEs - a global perspective<br />

care personnel (dawson et al., 2007). research on the consequences<br />

of load-related working conditions is concentrated on complaints<br />

concerning the upper limbs, neck/shoulders (andersson, fine, &<br />

silverstein, 2000; van der Windt et al., 2000) or <strong>low</strong>er back<br />

(andersson et al., 2000; Keyserling, 2000). More serious disorders,<br />

such as hernias, spinal degeneration, carpal tunnel syndrome,<br />

tendinitis or inflammations, are also associated with load-related<br />

working conditions (andersson et al., 2000; hoozemans, Van der<br />

Beek, frings-dresen, Van dijk, & Van der Woude, 1998; Muggleton et<br />

al., 1999). furthermore, effects on exhaustion and occupational<br />

stress are also common (akerstedt et al., 2004; laaksonen,<br />

rahkonen, Martikainen, & lahelma, 2006).<br />

The impact of vibrations is defined by their magnitude, frequency,<br />

duration and direction. Vertical vibrations seem to involve the<br />

highest discomfort (Griffin, 1998). There is also a difference between<br />

whole-body vibrations and hand-transmitted vibrations. The first are<br />

common in drivers and operators of construction equipment<br />

(Kittusamy & Buchholz, 2004). hand-transmitted vibrations are most<br />

common in workers using hand-operated tools<br />

and machines. long-term and daily exposure to<br />

vibrations is associated with health problems<br />

ranging from cardiovascular, respiratory, and<br />

physiological changes to musculoskeletal<br />

problems, effects on the central nervous system,<br />

gastro-intestinal complaints, reproductive<br />

problems and various stress reactions (Griffin,<br />

1998; Keyserling, 2000).<br />

noise can be considered as one of the most<br />

common workplace hazards in the world (dunn,<br />

hands of a child miner. Goldmines of komabangou (niger). 2000). it is most prevalent in manufacturing,<br />

source: © ilo/M. crozet (2003)<br />

transportation, construction and the primary<br />

economic sector (dunn, 2000). hearing loss and<br />

tinnitus are the most prominent health consequences (suter, 1992). in<br />

most cases, the hearing loss is only temporary, though chronic<br />

consequences often go unnoticed until the hearing loss has attained<br />

disabling proportions (suter, 1998). at that point, psychosocial<br />

consequences related to communication problems start to emerge<br />

(riediker & Koren, 2004). indirect health effects also include general<br />

irritation, sleeping problems and fatigue, hormonal changes, increased<br />

blood pressure, cardiovascular problems, health and safety impairment<br />

and concentration problems (Passchier-Vermeer & Passchier, 2000).<br />

in order to preserve the body temperature between its ideal<br />

limits, the human organism has developed a set of reactions and<br />

264

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