Other survivors, who are able to work, have been refused jobs in garment factories because owners fear they would now be too slow or could be involved in some kind of labour activism, the survey said.
British charity Action Aid said 74 per cent of the 1,436 survivors they questioned are not working a year after being pulled alive from the rubble of the Rana Plaza garment factory complex.
The survey's findings come as Bangladesh prepares to mark one year since the country's worst industrial disaster on April 24, when the nine-storey building collapsed on the outskirts of Dhaka.
"Twenty four percent of them said they could not seek jobs because they were suffering from traumas such as insomnia and fear of work in enclosed facilities," Rahman said.
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"Some eight per cent of survivors told us that factory owners were unwilling to employ Rana Plaza victims because they fear these workers would be slow or would be involved in compensation-related activism."
Rescuers freed 2,438 workers from the ruined building where they had been stitching clothes for Western retailers for low wages as part of the impoverished country's booming garment export industry.
The Bangladesh Garment Manufacturers and Exporters Association denied factory owners were turning away Rana Plaza survivors, after pledging to employ them in the wake of the disaster.