"The ghastly thing about postal strikes is that after they are over, the service returns to normal"

This quote by Richard J. Needham is referring to the disruption brought on by postal strikes. When postal employees go on strike, it can trigger a lot of disruption to the postal service, leading to hold-ups in mail shipment and other concerns. The quote is recommending that, even after the strike is over, the service does not return to the very same level of efficiency as before. This can be very frustrating for customers, as they might have to wait longer than usual for their mail to get here. The quote is likewise highlighting the fact that postal strikes can have a long lasting influence on the service, even after the strike is over. This can be a significant inconvenience for clients, as they may need to wait longer than usual for their mail to get here.