Japanese Prime Minister, Shinzo Abe.

Japanese firms plan to return their excess cash to shareholders next year rather than spend it on wage rises, according to a Reuters survey, in a rebuke to Prime Minister Shinzo Abe's call for employers to lift salaries.

Arresting an 17-month slide in real wages is essential if Abe's economic stimulus policies are to succeed in boosting consumption and dragging the world's third-biggest economy decisively out of decades of deflation and stagnant growth.