English appear revolutionary, blocking scheme for workers (9)
I believe the answer is:
employees
'workers' is the definition.
(employee is a kind of worker)
'english appear revolutionary blocking scheme' is the wordplay.
'english' becomes 'e' (abbreviation).
'appear' becomes 'seem' ('seem' can be a synonym of 'appear').
'revolutionary' shows that the letters should be reversed in order.
'blocking' indicates putting letters inside (to block can mean to block in or contain).
'scheme' becomes 'ploy' (I have seen 'Tactical scheme' mean 'ploy' so perhaps 'scheme' could also mean 'ploy'**).
'seem' reversed gives 'mees'.
'mees' going around 'ploy' is 'mployees'.
'e'+'mployees'='EMPLOYEES'
'for' acts as a link.
(Other definitions for employees that I've seen before include "Workers" , "Workforce" , "People on the payroll" .)