Is it something like... delays in contact due to emergencies, or delays in working? Or both? A general clause that in the case of emergencies a commission/ contact may be delayed, but that you will absolutely try to get in direct contact when you are physically able.

I had a quip under my ToS for a while because my job constantly sprung intense, excessive overtime on me. It went something like "Due to my job I may get excessive overtime without warning. While I try my best to keep clients in the loop, I will notify you if there will be a significant delay in your work."

Is that kind of what you're looking for? :)