This is Dr. David
yes, you should take him to the doctors right away
or to the A&E for evaluation.
tightness around the chest and numbness in the forearm could be signs of an early heart attack
where the heart muscles are not getting enough blood flow
work stress does not help.
you should get him to the hospital right away to see if he is having a heart attack or any sort of heart related chest pain.
let me know if you have questions.