Elon Musk accuses laid-off Twitter employee of using their disability as an 'excuse' to do 'no actual work'

• Elon Musk accused a former employee of using their disability as an "excuse" to do "no actual work."
• The former employee, Haraldur Thorleifsson, said he has muscular dystrophy. 
• Musk and Thorleifsson engaged in a heated exchange on Twitter on Monday.

Elon Musk has accused a laid-off Twitter employee of using their disability as an "excuse" to do "no actual work."

The accusation was aimed at Haraldur Thorleifsson, a former Twitter director who engaged in a public spat with Musk on Monday.