RSUs taxed at vesting.
Generally, tax at grant for RS.
Taxable amount is fair market value of the shares on the tax event. For RS, employee should be able to reduce taxable amount to take into account restrictions placed on shares.
No tax on the sale of shares provided the shares are not acquired and/or held as a business asset.
Shares, but not unvested RS/RSUs, are subject to annual wealth.
Income Tax:
Reporting requirements apply with respect to the grant of RS/RSUs and vesting of RSU.
Withholding required only for foreign employees with "B" permit and cross-border employees.
Social Insurance Contributions:
Yes, for both employee and employer. Employer must withhold employee's contribution.
A valid basis is required to collect, process and transfer personal data.
Companies should review their approach to data privacy compliance in the context of equity plan administration and consider on which basis they may be able to rely to collect, process and transfer the employee's personal data.