Hong Kong's increasingly confrontational political atmosphere means the government will find it difficult to attract high-calibre candidates from the private sector to fill key posts, according to Leung Chun-ying, a senior member of the Executive Council. In recent years, those individuals who spend their lives in public service have needed to make more sacrifices than before, he said. This made it harder to fill top posts, such as finding a candidate in the business sector to become the next financial secretary and also to recruit chairmen and members of advisory committees. Mr Leung called on more people to serve the community by devoting themselves to the duties of public service. He said senior positions dealing with financial and monetary affairs were not easy due to the economic downturn and uncertainties. Despite last week's ministerial resignations, two ministers yesterday declared their commitment to their jobs. Returning from a visit to Europe, Secretary for Financial Services and the Treasury Frederick Ma Si-hang said he regretted the resignations but added that the political developments would not affect his work. Asked if, as a close ally of former financial secretary Antony Leung Kam-chung, he had any plans to step down, Mr Ma replied that it was now time for everybody to show solidarity and not quit. Sarah Liao Sau-tung, the Secretary for Environment, Transport and Works, told a radio programme that somebody had to take responsibility in the wake of the political crisis and that resignations were the obvious result. She said she had been shocked by last week's departures and had felt deeply the 'cruelty and complexity' of politics.