If it is proved that
the injury of a worker is attributable to his —
(a)
voluntary consumption of alcoholic liquor or of a drug of addiction, or both,
which impairs the proper functioning of his faculties; or
(b)
failure, without reasonable excuse, proof of which is on him, to use
protective equipment, clothing, or accessories provided by his employer for
the worker’s use; or
(c)
other serious and wilful misconduct,
any compensation
claimed in respect of that injury shall be disallowed unless the injury has
serious and permanent effects or results in death.
[Section 22 amended: No. 42 of 2004 s. 13 and
147.]