31. Prohibition of employment of certain
persons in certain building or other construction
work.- No person about whom the employer
knows or has reason to believe that he is a
deaf or he has a defective vision or he has
a tendency to giddiness shall bc required or
allowed to work in any such operation of building
or other construction work which is likely to
involve a risk of any accident either to the
building worker himself or to any other person.
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