Every year, thousands of construction workers suffer hearing loss from excessive noise exposure on the job. Hearing loss impairs quality of life on and off the job, but it can also increase the risk of injuries — for instance, when a worker cannot hear approaching vehicles or warning signals.
Noise-induced hearing loss usually results from extended exposure to sound levels greater than 85 decibels A-weighted, or dBA the A-weighting discounts certain sound frequencies to simulate human hearing. Hearing loss begins at higher frequencies 4, Hertz and above and thus first affects the ability to hear high-pitched sounds, such as women's and children's voices especially on the telephone.
With continued exposure, the high-frequency hearing losses become more severe and losses occur in the normal-speech range 3, Hertz and below.
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In , residential construction revenues for production of single-family homes were at the highest level in two decades. Small construction companies abound. During the last decade the construction industry has benefited from strong, sustained growth that has exceeded the national economy as a whole.
As a result, construction grew from 4. Total construction employment expanded from 7. Growth has been most striking among the Hispanic workforce, which more than tripled in the last decade to 2.
Day laborers make up a notable portion of the construction workforce. The construction workforce is aging. In , the average age of construction workers was 39 years old, three years older than two decades ago.
The workforce increasingly is divided into two demographics: the entry of a large number of young Hispanic workers and the existing workforce that is growing older. Therefore, it is expected that both occupational training and safety and health training will be in high demand. Construction employment is predicted to rise in the coming decade, although not as quickly as in previous years, adding , wage-and-salary jobs by The prevalence of employment-based retirement plans among construction workers is low.
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