An engineering colleague of mine has been planning on leaving for the last several months and is leaving in about a months time. Over this period, the engineering department has not been aware of this as HR advised him not to notify engineering.
We are both graduate engineers but he has been there a few months longer than I have. I am aware of this as the colleague told me privately several months ago.
Training for tools we use are expensive, and engineering has not had the funds to send some of us on training, and this colleague was one selected to be funded for training as engineering planned to put him on the next major project.
As this colleague is supposed to be on the next major project (which he will leave before it starts), he annoyingly got me booted of going on a trip as it was deemed 'it would be more valuable to the company if he went'.
Finally, I managed to wrangle myself a decent work area in the company, and now they are saying they are upgrading him in the next couple weeks by swapping our workstations because he will be on a major project.
As you can see, someone who is leaving without notifying engineering has taken a training place (costing several thousand), got me booted from a valuable trip and now is trying to take my work area - and I have been keeping my silence for this guy while simultaneously getting burned for it.
Should I hold my silence, or should I notify our manager?