An internal Trump administration memo reveals an extensive plan to cut government-wide staffing, including slashing the Treasury Department’s workforce by one-third and reducing the Department of Housing and Urban Development’s staff by half.

The memo, drafted a week ago, comes amid upcoming Reductions in Force that are expected to significantly decrease government payrolls. Trump has directed federal agency heads to devise their own plans for downsizing, with wide-scale layoffs scheduled to begin next month, according to the Washington Post.

Agencies where stiff cuts are being made include the Small Business Administration, at 43 percent, and HUD, at 50 percent, according to the memo, per the Post.