Client putting strict hours with fixed brake times in our project. Or else putting half a day.

which account?

Nope. Nada. if you mean you cannot take coffee breaks like the other teams does. TCS has a fixed 45 hours per week policy. If the client is forcing to break that, then you can go to HR \ PM and voice your concerns. Otherwise, you have to go with the flow. Hours != Work Product. In simple terms, be in ODC, but enjoy and chill.