The eagled-eyed reader, who snapped this photo, wrote:

This mobile crane is holding a machine which weighs approximately 14 tonnes about 300 mm off th ground. Wooden blocks that could have been used to minimise any failure, were within easy reach."

Never work under a suspended load, even for short periods or for minor work, as the consequences of crane or rigging failure can be catastrophic.

If you need to work on the load either lower it to the ground or support on packing, such as timer dunnage.