I see lot of stress and conflict in people at work place due to demands and expectations and focus on meeting the productivity. Any suggestion for that where the expectations are necessary to fulfill the goal of the organization?

You must try and meet the expectations if they are reasonable and it is possible to achieve them with effort. If in spite of your best efforts you are unable to meet them you must present the situation to the boss in a rational manner and specify what inputs are needed to achieve them.

In any case you must not get stressed as stress disables you and you are unable to do whatever you are capable of if your mind is disturbed.

In the end your sincerity and effort yield results.