(b) For the purposes of this chapter, the terms "injury" and "personal injury" include occupational pneumoconiosis and any other occupational disease, as hereinafter defined, and workers' compensation benefits shall be paid to the employees of the employers in whose employment the employees have been exposed to the hazards of occupational pneumoconiosis or other occupational disease and in this state have contracted occupational pneumoconiosis or other occupational disease, or have suffered a perceptible aggravation of an existing pneumoconiosis or other occupational disease, or to the dependents, if any, of the employees, in case death has ensued, according to the provisions hereinafter made: Provided, That compensation shall not be payable for the disease of occupational pneumoconiosis, or death resulting from the disease, unless the employee has been exposed to the hazards of occupational pneumoconiosis in the State of West Virginia over a continuous period of not less than two years during the ten years immediately preceding the date of his or her last exposure to such hazards, or for any five of the fifteen years immediately preceding the date of his or her last exposure. An application for benefits on account of occupational pneumoconiosis shall set forth the name of the employer or employers and the time worked for each. The commission may allocate to and divide any charges resulting from such claim among the employers by whom the claimant was employed for as much as sixty days during the period of three years immediately preceding the date of last exposure to the hazards of occupational pneumoconiosis. The allocation shall be based upon the time and degree of exposure with each employer.
(c) For the purposes of this chapter, disability or death resulting from occupational pneumoconiosis, as defined in subsection (d) of this section, shall be treated and compensated as an injury by accident.
(d) Occupational pneumoconiosis is a disease of the lungs caused by the inhalation of minute particles of dust over a period of time due to causes and conditions arising out of and in the course of the employment. The term "occupational pneumoconiosis" includes, but is not limited to, such diseases as silicosis, anthracosilicosis, coal worker's pneumoconiosis, commonly known as black lung or miner's asthma, silico-tuberculosis (silicosis accompanied by active tuberculosis of the lungs), coal worker's pneumoconiosis accompanied by active tuberculosis of the lungs, asbestosis, siderosis, anthrax and any and all other dust diseases of the lungs and conditions and diseases caused by occupational pneumoconiosis which are not specifically designated in this section meeting the definition of occupational pneumoconiosis set forth in this subsection.
(e) In determining the presence of occupational pneumoconiosis, X-ray evidence may be considered, but shall not be accorded greater weight than any other type of evidence demonstrating occupational pneumoconiosis.
(f) For the purposes of this chapter, occupational disease means a disease incurred in the course of and resulting from employment. No ordinary disease of life to which the general public is exposed outside of the employment is compensable except when it follows as an incident of occupational disease as defined in this chapter. Except in the case of occupational pneumoconiosis, a disease shall be considered to have been incurred in the course of or to have resulted from the employment only if it is apparent to the rational mind, upon consideration of all the circumstances: (1) That there is a direct causal connection between the conditions under which work is performed and the occupational disease; (2) that it can be seen to have followed as a natural incident of the work as a result of the exposure occasioned by the nature of the employment; (3) that it can be fairly traced to the employment as the proximate cause; (4) that it does not come from a hazard to which workmen would have been equally exposed outside of the employment; (5) that it is incidental to the character of the business and not independent of the relation of employer and employee; and (6) that it appears to have had its origin in a risk connected with the employment and to have flowed from that source as a natural consequence, though it need not have been foreseen or expected before its contraction: Provided, That compensation shall not be payable for an occupational disease or death resulting from the disease unless the employee has been exposed to the hazards of the disease in the State of West Virginia over a continuous period that is determined to be sufficient, by rule of the board of managers, for the disease to have occurred in the course of and resulting from the employee's employment. An application for benefits on account of an occupational disease shall set forth the name of the employer or employers and the time worked for each. The commission may allocate to and divide any charges resulting from such claim among the employers by whom the claimant was employed. The allocation shall be based upon the time and degree of exposure with each employer.
(g) No award shall be made under the provisions of this chapter for any occupational disease contracted prior to the first day of July, one thousand nine hundred forty-nine. An employee shall be considered to have contracted an occupational disease within the meaning of this subsection if the disease or condition has developed to such an extent that it can be diagnosed as an occupational disease.
(h) (1) For purposes of this chapter, a rebuttable presumption that a professional firefighter who has developed a cardiovascular or pulmonary disease or sustained a cardiovascular injury has received an injury or contracted a disease arising out of and in the course of his or her employment exists if: (i) The person has been actively employed by a fire department as a professional firefighter for a minimum of two years prior to the cardiovascular injury or onset of a cardiovascular or pulmonary disease or death; and (ii) the injury or onset of the disease or death occurred within six months of having participated in firefighting or a training or drill exercise which actually involved firefighting. When the above conditions are met, it shall be presumed that sufficient notice of the injury, disease or death has been given and that the injury, disease or death was not self inflicted.
(2) The Insurance Commissioner shall study the effects of the rebuttable presumptions created in this subsection on the premiums charged for workers' compensation for professional municipal firefighters; the probable effects of extending these presumptions to volunteer firefighters; and the overall impact of the risk management programs, wage replacement, premium calculation, the number of hours worked per volunteer, treatment of nonactive or "social" members of a volunteer crew and the feasibility of combining various volunteer departments under a single policy on the availability and cost of providing workers' compensation coverage to volunteer firefighters. The Insurance Commissioner shall file the report with the Joint Committee on Government and Finance no later than the first day of December, two thousand eight.
(i) Claims for occupational disease as defined in subsection (f) of this section, except occupational pneumoconiosis for all workers and pulmonary disease and cardiovascular injury and disease for professional firefighters, shall be processed in like manner as claims for all other personal injuries.
(j) On or before the first day of January, two thousand four, the Workers' Compensation Commission shall adopt standards for the evaluation of claimants and the determination of a claimant's degree of whole-body medical impairment in claims of carpal tunnel syndrome.
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