71D. (1) The railway servant shall be granted, each week commencing on Sunday, a rest of not less than twenty-four consecutive hours:Provided that this sub-section shall not apply to the railway servant whose employment is essentially intermittent, or to the railway servant to whom sub-section (2) applies.(2) The Government may, by rules made under section 71E, specify the railway servants or classes of the railway servants to whom periods of rest may be granted on a scale less than that laid down in sub-section (1), and may prescribe the periods of rest to be granted to such railway servants.(3) Subject to rules made under section 71E, temporary exemptions form the grant of periods of rest may be made in the cases or circumstances specified in sub-section (3) of section 71C:Provided that the railway servant shall, as far as may be possible, be granted compensatory periods of rest for the periods he has foregone.