It will be at least two years before door-to-door mail delivery is phased out in Sarnia.
Canada Post spokesperson Anick Losier says they're beginning the process in centres such as London and St. Thomas where there is a higher projected rate of staff retirement.
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She says municipalities, the Canadian Union of Postal workers and homeowners will be notified well in advance of the beginning of the end of door-to-door delivery which will take about a year to phase in.