在E2单元格输入以下:
=IF(D2="","",IF(LEN(D2)=18,IF(ROUND(DATEDIF(MID(D2,7,4)&"-"&MID(D2,11,2)&"-"&MID(D2,13,2),$F$2,"M")/12,0)<=15,"童工",IF(C2="男",IF(ROUND(DATEDIF(MID(D2,7,4)&"-"&MID(D2,11,2)&"-"&MID(D2,13,2),$F$2,"M")/12,0)>45,45,ROUND(DATEDIF(MID(D2,7,4)&"-"&MID(D2,11,2)&"-"&MID(D2,13,2),$F$2,"M")/12,0)),IF(ROUND(DATEDIF(MID(D2,7,4)&"-"&MID(D2,11,2)&"-"&MID(D2,13,2),$F$2,"M")/12,0)>40,40,ROUND(DATEDIF(MID(D2,7,4)&"-"&MID(D2,11,2)&"-"&MID(D2,13,2),$F$2,"M")/12,0)))),"身份证号码错误"))

功能:
1.判断性别
2.判断年龄,不足16岁的显示为童工
3.可以对身份证号码进行判断
4.满足你以上提出的劳龄计算规则(男最多45年)