|In the case your company hires employee （not part time employee）in Japan, it needs to pay several kind of cost, including social insurance.
(in the case of company, enrollment in social insurance is necessary as far as its employee is full time worker)Assumed that your company hires an employee and pay monthly salary of 300,000 yen (not bonus).
As for Social insurance (shakaihoken).
1)workers’s accident compensation insurance(Rousai hoken) : 0.35% of monthly payment should be paid only by employer.
2)unemployment insurance (koyou hoken) : 0.85% of monthly payment should be paid employer.
3) Employee’s pension (Kousei nenkin) : 17.474 % of monthly salary should be paid by employer and employee evenly.
4) Employee’s health insurance (Kenkou hoken) : 9.97% of monthly salary should be paid by employer and employee evenly.