Former Singapore Civil Defence Force (SCDF) chief Peter Lim Sin Pang will return to court on Friday afternoon for his sentencing hearing.
The prosecution is expected to make submissions on sentencing, while the defence will enter Lim's mitigation plea in his sex-for-contracts case.
The high-ranking civil servant was found guilty of one count of corruption for obtaining oral sex from Ms Pang Chor Mui, 49, a general manager at Nimrod Engineering, in exchange for furthering the business interests of her employer.
He faces a jail term of up to five years or a fine of up to $100,000, or both.
When delivering her judgement last Friday, District Judge Hamidah Ibrahim had harsh words for Lim whom she said was neither a "credible witness nor a witness of truth".
She found that he had been the one who initiated the May 2010 sexual encounter and rubbished his explanation that he had caved in to Ms Pang's request out of pity.
During the trial, Lim also said that he did not know he had flouted government procurement rules when he called Ms Pang ten months after their tryst to tip her off about an SCDF tender for radiation portal monitors. But Judge Hamidah said that Lim, who had been in the civil service for 25 years, should have been aware of the conflict of interest, and therefore had guilty knowledge.
Ms Pang's then-employer Nimrod Engineering participated in the tender when it was eventually called in April 2011.
Lim, who was released on $15,000 bail, still faces nine other corruption charges that will be dealt with separately. They involve two other women who also work for technology firms.
The Ministry of Home Affairs has temporarily suspended its own disciplinary proceedings against him until a final outcome is known in his trial. In the meantime, he remains interdicted from his duties with the SCDF.