A work insertion device that can be constituted as a small, low-cost device has a structure where a transfer disk having many storage holes formed through its outer periphery part is placed such that its rotation center line is inclined upward to form a sharp angle α with a vertical line and that some of the many storage holes are positioned in the work storage chamber. The works stored in bulk state in the work storage chamber are directly stored in some of the many storage holes positioned in the work storage chamber by utilizing the intermittent turning of the transfer disk.