one's job or duty
... one's job 本职; 本职 one's job or duty 分内; 分内 part of the job 应分; 应分 ...
within one's remit
... 分克 decigram 分内 one's job or duty; within one's remit 分蘖 tiller (stem at the base of grass plants) ...
分内,指本人范围之内。语出南朝 皇侃义疏:“君子思虑,当己分内,不得出己之外,而思他人事。”