Is this a mortal sin?

[futuresister]

So, I am in college and I just started an on-campus job that I hate. I have anxiety, like SEVERE anxiety. I have almost had panic attacks at work. I am trying to find a different job but I am thinking about calling in sick one day this week because I am so anxious. Would it be a mortal sin if I told them I was sick?

[Luigi]

No.