interesting one!!! the first letter is from the following clue:
Competition between managers to "incentivise" staff? Being short of a member, you'd have no chance (4-7,7)
I put: ar*e-licking contest
but your k would make it
ar*e kissing contest - or kicking, one of the two and means knee sock works!
. . . has to be 'Kicking'. Apart from connecting with 'Kneesock' the clue states 'being short of a member, you'd have no chance' . . . meaning having only one leg!!