Correct_Adagio_6099's journey

I was recently laid off from my position and have been presented with a severance agreement that offers only one month of pay. However, there's a clause that requires me to provide indefinite cooperation with the company for any legal matters that may arise. I'm unsure if this is a standard practice or if I should be concerned about signing it. HR has made it clear that the severance terms are non-negotiable. I'm seeking advice on whether it's common to have such a clause in a severance agreement and if I should proceed with signing it.