In the case, your company is busy and overtime work seems necessary, on this situation most Japanese would follow the instruction of their boss. What do you do? Long time ago most Japanese were agricultural people that the work was done communally. It seems they have built up a sense of solidarity.

Their fates were tied up together, sharing good times and bad times. You may feel Japanese society is somewhat suffocated, but people can depend on each other.

You are advised to understand this Japanese principle.