I understand that estimates are important and I give estimates. But recently in my company it’s fashionable to talk about “commitments” and I won’t give those.

I understand that estimates are important and I give estimates. But recently in my company it’s fashionable to talk about “commitments” and I won’t give those. In my view this is just a way to get overtime and weekend work out of people once things fall behind so they meet their commitments. I commit to do my work as best as i can but I can’t commit to work overtime because of issues that are often out of my control.