1 从句子结构分析,你的句子应该是“主语从句”------- it is adj that + 句子.
2 不是强调句,因为deserving不属於that後面句子的任何成分.
3 如果可以,我来完善你的句子:
It is necessary / important / imperative THAT we need some leisure / some relaxation when we want to take some time off for ourselves after a day's work.