Senior civil servants will demand that the Government pays back the shortfall in their salary increases when the economy improves, a union said yesterday. The Executive Council yesterday endorsed the economic rescue package unveiled by Tung Chee-hwa. Pay will be frozen for a year for senior officials at the D3 salary level of $127,900 or above, and their counterparts in the Judiciary, Independent Commission Against Corruption and other sections at a saving of $70 million. They would have been due a 6.03 per cent rise, under a pay trend survey. Lower and middle ranking staff would have been due a 5.79 per cent increase. Senior Non-Expatriate Officers' Association chairman Leung Chi-chiu said the association had some members at the D3 level or above who were affected. 'When the economy improves, we will demand for the shortfall to be paid back.' Mr Leung said the Government had not followed the pay trend survey of the private sector and had decided on a lower pay rise for all civil servants in 1990 and 1991 to suppress inflation. Vice-president of the Hong Kong Chinese Civil Servants' Association, Peter Wong Hyo, said: 'We are willing to share the ups and downs of the economy.' He said, however, the administration should stick to the pay trend indicator as paying back the shortfall would mean differences between lower and upper ranking staff would widen again.