If you are a good engineer and a valuable member of the team people will know, whether you hit your estimates or not. It’s almost like the better you are at actually producing the less you need to worry about the red tape. If you are invaluable and crushing projects no sane manager is going to fire you over your estimate accuracy, but if you are doing poorly and not producing they may point to it as a problem area. I have only worked for small-mid size teams though so maybe it is not like that for huge ones.