THE Post Office on Wednesday gave the Communication Workers’ Union a 48-hour notice that striking workers will be locked out of the work area. Post Office communications general manager Sandile Madolo said a 48-hour lock-out notice was given to the CWU national office to “…prevent postal service standards from further being negatively affected by the current strike”. Madolo said that despite the strike ending on Monday, the Post Office is beign affected by workers embarking on go-slows, bans on overtime and work rule actions.