The anniversary of the day you started working at a particular business. Not normally celebrated (unless it's a big one like 10 years, 20 years, etc) but sometimes acknowledged by the person, co-workers or the boss.
Because he was a good employee, Jason's boss sent him a Happy Work Birthday e-mail congratulating him on five years of service
by Brickdictionary118 October 12, 2013
Get the Work birthday mug.