ARCHITECT Graham Dwyer thought proposed cuts to his pay were an "error" when he first learned of them and told his employers the reductions were "unsustainable", the jury was told,
His reaction to the news of the cuts was contained in a series of e-mails handed over by the firm he worked for to gardai investigating the death of Elaine O'Hara.
The Central Criminal Court also heard he later signed up for the "bike to work" scheme and bought a bicycle for €629.
Siobhan McEvitt, office manager at A&D Wejchert was led through her evidence by Sinead McGrath BL, for the prosecution.
She agreed that Mr Dwyer had started work for the firm on July 2, 2001 and became a director in June, 2006.
She handed over a number of telephone records to gardai - between September 2006 and December 2012. She also gave gardai a series of emails in relation to Mr Dwyer's salary, all dated February 2, 2009. The first was to Ms McEvitt and David Lanigan from Mr Dwyer.
The reply from Ms McEvitt confirmed a number of details in relation to the pay cuts, referring to tax matters, and telling Mr Dwyer she would show him the exact figures the following day.
An email from Mr Dwyer to Mr Lanigan, cc-ing Ms McEvitt stated: "There must be an error; my 10pc gross salary reduction couldn't possibly result in a 15pc net salary reduction."
He said in the mail the €700 monthly drop was "not sustainable" and he would be attending the meeting the following morning.
Mr Lanigan replied that Ms McEvitt would "go through it with you in the morning".
The final email from Ms McEvitt to Mr Dwyer dated September 25, 2012 titled "Re September Salary" showed a reduction from €4,024 to €3,434.
The methodology for calculating the figures was set out.
Also handed over were breakdowns for three company visa cards, one of which Mr Dwyer could use to order items.
Ms McEvitt gave gardai a feasibility study for a grant claim form in relation to trips to Warsaw in 2011 and 2012.