"Needless to say, wage levels ought to be determined solely by management and workers. But it is equally true that the emerging consensus among the government, business leaders, and trade unions already has led a growing number of companies to promise significantly higher wages and bonuses," he wrote.
"This is the essence of the wage surprise. It will be an entirely new phenomenon, one that, together with the massive 5 trillion yen fiscal stimulus, will more than offset the potential negative effect of a sales-tax increase," he added, referring to a rise in Japan's consumption tax that takes place in April.
Optimism about Abe's economic policies and a weak yen helped fuel a stellar 57 percent gain in the Nikkei stock index last year, while the closely-watched Tankan survey showed business sentiment hit a six-year high in the three months to December.
(Read more: Nikkei at 25,000? Nomura thinks so)
"Some say that, unlike the first and second arrows, the third is hard to come by. I do not disagree: by definition, structural reforms take more time than changes in monetary and fiscal policy do," Abe said, adding that the government was committed to delivering an economic recovery by "all means available."
"Here, the wage surprise stands out, because only when the long-missing link between corporate profitability and wages is restored will investment in houses, cars, and other durables, and household consumption in general, finally rid Japan of its deflation and put its economy on a sustained growth path," Abe said.
— By CNBC.Com's Dhara Ranasinghe; Follow her on Twitter