The number of workers who allege that they have been mistreated as a result of whistleblowing has increased.
This is according to a report by the charity Public Concern at Work, which said that there has been a tenfold rise in such claims over the last decade, the Guardian reports.
Figures compiled by the organisation - which was set up in 1993 and offers advice to those concerned about crime, danger or wrongdoing at work - suggest that the number of people using legislation designed to protect employees if they expose problems jumped from 157 cases in 1999 to 1,791 last year.
Commenting on the findings, director of Public Concern at Work Catherine Wolthuizen said: "Our report suggests British employees are not being told that it is safe and acceptable to speak up about wrongdoing in their workplace."
She also noted that each claim represents evidence of a breakdown in relations between a firm and its staff members.