DOVES - FDM is anonymous until you go beyond certain preset limits and get flagged with a red flag(-s). Even then, the company need to go through a FDM group / manager and involve union etc before names are released to management. You can also get called up by the FDM people for minor events as they just want to know what happened. You explain why / how things happened and that's the end of the story.
I guess every company has their own procedures but this is the basic idea anyway.