I started my job 3 years ago and I eventually got tired of working days and moved to nights where it's less busy and more relaxed. That's when I started noticing more 'things' like dark shadows passing by other desks out of the corner of my eye. I would just blow it off. I started to hear tapping noises too from the huge windows behind my desk. Since there were other people around I just passed it off as someone else doing it.
When I went to overnights/graveyard shift that's when I really started to pick up on things I couldn't explain. They eventually moved our team to the other side of the call center and this is where it seemed more active. In front of my desk, about 50 ft away was a tv/que hanging from the ceiling. We always checked it to see if calls were holding and for how long, letting us know to answer the phones quickly. When I worked at my computer I would constantly see out of the corner of my eye a dark shadow passing back and forth in front of that TV. It drove me crazy! I even started pushing my files and papers higher up in my cubicle to block it out. One night I actually caught a glimpse of it. I was shocked. It was the top half, side view of a 'shadow person'. The head was slightly bent backward and the mouth open as if in a dazed lost state. Maybe that's how shadow people are? Wandering around in a half unconscious state just roaming in their dimension, lost? I think it may have been drawn to that TV since it was a bright white background and it was attracted to the light or used its energy? It moved very quickly and when I noticed it wasn't there anymore, I knew it was wondering around the call center at night. Yikes! I would hear noises, bangs, alarm clocks/radios going off at random and would feel a sensation of something passing by my desk. I especially hated going to the bathroom late night by myself and would make it fast! A few times I heard the toilet flushing over and over from behind the wall, which was the men's room. When I went back to my desk I asked the only other person there if he went to the bathroom, nope.
Another co-worker told me when he was in the bathroom all alone the automated paper towel dispenser went off by itself and rolls of tissue started spiting out. It has a sensor underneath that goes off giving you paper towels but he wasn't near it? He was on the other side of the sink. He said he got creeped out and immediately went back to his desk.
It was me and another guy that did the graveyard together and eventually one night we shared our experiences. I'll have to post other stories since there's too many.
One night I was relaxed at 2am just watching a movie at my desk when something got my attention. I looked over down a long isle/hallway that leads to the restrooms. It was always darker over there especially when we turned off the annoying office lights at night but I saw the top half, head- shoulders of a shadow person darting quickly down the isle in between the supervisors cubicles as if it was roaming around. It moved so fast but I caught a glimpse. Sometimes I would see a shadow of the top part of the head passing by other cubicles at random too. The term "restless spirit" made perfect sense to me. I always pretended not to notice since spirits sense your fear and use your energy. I think she knew I liked being scared and all things paranormal so she started to like me and play around more. Sometimes I would catch the shadow peeping at me from around the corner as if to say 'Hehe, I see you! Do you see me?' It was funny.
I remember one night when my co-worker and I were chit chatting and I suddenly felt a tugging on the back of my shirt. I ignored it thinking it was my shirt caught on my belt. Moments later, it happened again. I stopped and knew she was tugging on my shirt. I thought it was amusing though. I know it's a female spirit and I will tell you in my next story!