Romania's corruption fight puts the brakes on investment

* Civil servants reluctant to take decisions

* Public investment at a 7-year-low

* Romania has second-biggest black economy in Europe: study

* Officials demand cash, cars and holidays

By Matthias Williams and Luiza Ilie

BUCHAREST, April 8 (Reuters) - Romania's crackdown on corruption is having an unintended consequence: investment is slowing as many officials avoid approving projects lest they become the next target of the investigators.

Civil servants and ministers who would otherwise sign off on projects, sometimes but not always in return for bribes, have become hesitant. Even honest officials fear the deals will attract scrutiny by prosecutors and that they will join a long line of public figures to be investigated or imprisoned.

In the long term, most observers say, rooting out corruption will bring huge benefits to Romania, the European Union's second poorest country. For now though, it is delaying both private investment and the signing of contracts for firms to undertake projects for the state.

The latest casualty in the fight against graft is Finance Minister Darius Valcov, who resigned last month after being accused of taking bribes. Prosecutors later found more than 100 paintings, some by Picasso and Renoir, as well as gold bars and cash stashed away in various places including his safe. He denies wrongdoing.

The head of Romania's fiscal watchdog says the slowing of decision-making has helped to drag down capital expenditure, with net public investment spending as a share of GDP at a 7-year-old low, according to Eurostat data.

"By and large if you talk to most of the businesses I have come across they believe it (the anti-graft fight) was long overdue, some message had to be given," Ahmed Hassan, a managing partner at the consultancy Deloitte in Bucharest, told Reuters.

"The drawback of it - we have seen that in the last one year specifically, even vis-à-vis our projects - (is) decisions are just not happening. Some people are waiting, maybe it'll go away from me and someone else will do the approval."

"And that's just not good. Sometime strategic projects could be delayed because of over-nervous bureaucrats."

Business executives are reluctant to discuss openly which of their projects have been held up, fearing that publicity will lead to yet more delays.

However, Olguta Vasilescu, a prominent mayor, said local administrators are on a "signature strike".

Aristotel Cancescu, the head of the council in the central city of Brasov agrees. "At present it is a risk to work in local public administration," said Cancescu, who himself is under investigation for money-laundering and taking bribes.