Should I be upset??!!!!!!!

Today me and my husband had planned to spend time with my side of the family so my brothers kids can play with our daughters and we planned out talked to my brothers family and my mom and last minute he tells me he wants to work overtime and I get it earning money but we had planned this with my family I feel if it was his side of the family he would drop everything to be with them, should I be upset he is working but we had planned this and my brother set aside the day now I have to cancel it because my husband decided to work overtime not required by his boss but because he wanted to I’m just confused and I am upset for my family and I was looking forward to spending time with them!