请教CPP/EI Exemption是什么意思

angel0211

大家好，我才到加拿大上班，税务方面一头雾水。
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5 G: H& N! `6 b( N0 ^入职时小蜜给我一份CPT1表格填写。"Aplication to Canada Revenue Agency for CPP/EI Exemption". 请问这个表格是申请什么的？是申请不缴CPP/EI吗, 还是其他意思？
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表格里有这么一段话: ”XXX must make CPP and EI deductions from workers. However, if you interpret your income to be CPP/EI exempt, you must apply to CRA directly for a ruling on whether your employment is pensionable and/or insurable, or both”
* z4 m7 A/ \' W3 }* G) K+ Z“ruling”是什么意思啊？
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& T  @+ T& j! d+ n+ Q. t2 B/ D3 r谢谢各位啦！