Your value add is the real contribution you make to your organization's success. While doing the activities listed in your job description or your job specification is important and makes a contribution, your value add moves beyond activities or actions performed and illuminates, instead, the actual contributions you made to your organization's success.
It is used in gardens, landscaping, horticulture, and agriculture. The compost itself is beneficial for the land in many ways, including as a soil conditioner, a fertilizer, addition of vital humus or humic acids, and as a natural pesticide for soil.
It does not matter what kind of wood your sawdust is from. Sawdust from all types of trees, soft or hard, can be used in your compost pile. The one thing to be mindful of is if you will be composting sawdust from chemically treated wood.