Since the downfall of Bear Stearns, financial services professionals are growing more fearful of losing their jobs, a new survey shows.

Thirty-four percent of 1,200 financial services workers surveyed by eFinancialCareers, a New York-based job site, said they had become less confident about job security in the sector following the investment bank's collapsed over losses in mortgage-backed securities. Indeed, as many as 14 percent of respondents said they had already lost their jobs.

Only 25 percent said they expected year-end bonuses to climb, down from 27 percent in January, while most said bonuses will either stay the same or decline, the survey found.

According to eFinancialCareers, the number of financial services resumes posted online has doubled in last three months compared to the same period last year.