Isekai Tenshoku Undead Works

Emi Inatsuki is reincarnated in a different world when she is overworked by a black IT company! It is far from the "I'm the strongest!" development and she is forced to get a job at an IT company in that world.

I became a zombie and my colleagues are undead; both their personalities and lifestyles are just weird! Each customer is another familiar monster... Even if I want to die, my next workplace won't let me.

(Source: Hakusensha, translated)