Just curious as I lie here unable.to sleep - mainly because of work issues playing in my mind.( In particular one individual who regularly shours his mouth off.) But not helped by my perimenopausal state. I've had one hour sleep.so far and the alarm is due to.go off at 6am. Is lack of sleep a reason to not work tomorrow ? Curious as I remember another colleague mocking someone who did just that - little.did i know id be in the same situation now. Im not one to take time off -1 day in 4 yrs-- and I'm won't necessarily take tomorrow off as I've got loads to do but in these enlightened times I wonder if it acceptable.