What factors should we take into account when deciding on...

What factors should we take into account when deciding on the bonus amounts for our employees? Some of the factors to consider include their {performance metrics}, such as {specific KPIs}, their {length of employment} or {tenure}, {specific accomplishments} they have achieved, and {other relevant criteria} like {specific dynamics within their team}, {specific training or development opportunities} they have undergone, and {specific cost of living adjustments}.