Global Affairs Canada (GAC) says most of its employees will not be required to work in the office four days a week, starting on July 6, as there isn’t enough office space to make the change work, Radio-Canada has learned.

The shift in plans, communicated in a GAC internal memo obtained by Radio-Canada, affects the majority of the department’s unionized employees. They are currently required to be in the office three days a week.

In February, the Treasury Board Secretariat announced that all unionized federal public servants would be required to return to the office for a minimum of four days a week starting July 6.

But according to the memo, GAC’s unionized staff will continue to be allowed to report to the office only three days a week for an indefinite period of time.

Starting Sept. 15, at least one of those three days must be either a Monday or a Friday, according to the memo.

Executives will still be required to be in the office five days a week starting May 4, as originally planned.