My one supervisor told me I was ok to just have a substitute work for me on Memorial Day just for the morning?

But another supervisor who’s covering for her this week while she son vacation scheduled me to work the afternoon and didn’t tell me and I didn’t know until I looked at the schedule. I was wondering if she was wrong to do that?

My one supervisor told me I was ok to just have a substitute work for me on Memorial Day just for the morning?
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