Most of the pain will be felt by part-time and casual workers, who make up 38% of the workforce, are easier to sack and tend to skew younger and more female.

【翻译】大部分的辛苦将由兼职和临时工承受，他们占了劳动力的38%，更容易被解雇，而且倾向于更年轻化和女性化。

who make up 38% of the workforce, are easier to sack and tend to skew younger and more female.

定语从句中，有3个并列的谓语（划线部分，tend 之前由 and 连接）

skew：倾斜。不及物动词或系动词，可以跟形容词。