Even as India has over 500 million workforce, productivity continues to remain a key challenge as 56 per cent are not skilled enough to meet the demands of the market and through apprenticeship this gap can be reduced, says a whitepaper by National Employability through Apprenticeship Programme (NETAP). Close to 60 per cent of the employers find that apprenticeship improves productivity and 76 per cent feel that it helps them address attrition, the whitepaper by NETAP, from Teamlease Skills University, reveals.