according to the Hudson Employment Index, married workers were happier with their work-life balance than unmarried workers, and married employees had more fun at work than unmarried workers.
Are you as an employer giving incentive for your (single) employees to get married? Or are you making it more difficult?
That brings me to the touchy subject of spouses working in the same organization. There are contrasting policies depending on the sectors in India. I know that consulting firms frown on spouses working within the organization (ironically, they don't mind spouses working for the competition!) whereas FMCG firms frown on having any relative working with the competition and IT and BPO firms allow spouses to work in the same organization (mixes the whole work-life thing and ensures that more time gets spent in office!)