"direct boss" is a valid and commonly used phrase in written English.
For example, "I went to my direct boss to report the results of the survey we conducted."
They quit their direct boss.
A mentor could be your direct boss.
But neither Tillerson nor his chief of staff are his direct boss.
Is It O.K. to Date a Supervisor Who Isn't My Direct Boss?
She can't manage a single kind word for the leader of the party and her direct boss.
And Mr Winterkorn, who has been its direct boss as well as the group's chief, looks responsible.
The Sports Direct boss, Mike Ashley, controls the other 11%.
Sports Direct boss Mike Ashley takes a £43m punt on Tesco shares recovering.
Sports Direct boss Mike Ashley has been criticised for "disgraceful and unlawful employment practices" after 50 former employees of its USC business were awarded compensation.
Some stores are likely to go to other bidders for the business who dropped out of the sale process, including Sports Direct boss Mike Ashley.
Sports Direct boss Mike Ashley once promised to finish off JD Sports, but now finds himself being trounced by his rival.
