"Optimism in the job market leads to opportunities for employees and you can guarantee they'll be watching the job market closely," she said.
The survey also showed 61 per cent of CFO's and financial directors found it difficult to hire skilled finance professionals.
The average time taken to fill a finance or accounting vacancy at management level was seven weeks, while a staff level role took an average of 5.7 weeks.
Alexander said managers should ensure remuneration and reward for top performers was in line with what the market was offering, but warned that was not where the efforts should stop.
"Staff turnover is expensive as well as disruptive, but there are some simple measures managers can take to improve staff satisfaction", she said.
"Many issues boil down to problems with people, structure or process. It's good for managers to regularly review each of these areas and be honest and transparent about what needs to change."
Alexander added that with high business confidence and the current difficulties in finding skilled staff, retention of employees should be given top priority by companies.