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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. S! W- i4 P9 W  D. A7 C4 I' k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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* c: d, ^: I2 I% P1 N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”
- L* {! D9 q" D“ruling”是什么意思啊？

1 y+ q8 U, h" V  w+ A* T谢谢各位啦！