Japan ramps up spending for typhoon relief, but workers are scarce

* Abe ready to seek more funds for storm reconstruction

* In construction industry, 5.3 openings per job seeker

* Olympics, urban development exacerbate labour shortages -analyst

By Tetsushi Kajimoto

TOKYO, Oct 28 (Reuters) - Ravaged by a series of storms, including the worst typhoon in decades, Japan is ramping up spending on rescue, repair and clean-up. But there's a catch: there are more shovels than hands.

Prime Minister Shinzo Abe's government has agreed to use $6.5 million for immediate disaster relief, looks set to tap into budget reserves of $5 billion, and may request more money to finance construction after Typhoon Hagibis tore through much of Japan's main island this month, killing 79 with seven still missing.

"We'll take fiscal steps, including a supplementary budget if necessary, so that disaster-hit local governments can do the utmost on rebuilding," Abe said.

But however much Abe spends, a severe labour shortage means his government will struggle to repair levee breaks and other damage across a broad swath of the country.

Construction is one of the most squeezed industries in the nation's tightest job market since the 1970s.

As Japan's population greys and shrinks, the supply of construction workers has slumped by 28% from its peak in the late 1990s to around 5 million. Yet demand remains robust amid a nearly seven-year economic expansion and the approach of next year's the Tokyo Olympics.

The construction industry has 5.3 job openings for every applicant, latest government data show, a ratio second only to that of security guards and far above the overall ratio of 1.6, which is the highest in decades.

LABOUR CRUNCH

The scale of Hagibis, in which 71 rivers burst 140 levees and other embankments over vast areas from Nagano, central Japan to Iwate in the far northeast of the main island, means the job of fixing the damage is vast.

"We are absolutely short of workers," said Yoshiaki Suzuki, president of the six-man construction firm Suzuki Kenzai Kogyo in Chiba Prefecture east of Tokyo, which flooded three times since early September.

Tateyama, where Suzuki lives, was still recovering from massive flooding and long power outages caused by Typhoon Faxai last month when Hagibis hit on Oct. 12-13. On Friday and Saturday, a third storm inundated the city, killing 10 in Chiba Prefecture and dumping as much as 283.5 millimetres (11 inches) of rain on some areas over 12 hours.

"Our top priority is to restore lifelines, repair roads and cover the damaged roofs with blue plastic sheets," Suzuki told Reuters. "There's no time for removing the heaps of rubble caused by the last two typhoons."