Section 21(6)(a) in The M.P. Beedi and Cigar Workers (Conditions of Employment) Rules, 1968
(a)In every canteen-(i)all inside walls of rooms and all ceilings and passages and staircases shall be lime-washed or colour-washed at least once in each year or painted once in three years dating from the period when last lime-washed or colour-washed or painted, as the case may be;(ii)all wood work shall be varnished or painted once in three years dating from the period when last varnished or painted;(iii)all internal structural iron or steel work shall be varnished or painted in three years dating from the period when last varnished or painted :