Added to the increase in hourly wages requested last July, the railroad employees are now seeking an expanded program of retirement benefits.
(A) Added to the increase in hourly wages requested last July, the railroad employees are now seeking an expanded program of retirement benefits.
Wrong modifier/subject(B) Added to the increase in hourly wages which had been requested last July, the employees of the railroad are now seeking an expanded program of retirement benefits.
Same as (B)(C) The railroad employees are now seeking an expanded program of retirement benefits added to the increase in hourly wages that were requested last July.
Wrong verb "were requested" that modifies "the increase". Also big meaning issue with "seeking benefits added to the increase" - sounds like benefits were already added.
(D) In addition to the increase in hourly wages that were requested last July, the railroad employees are now seeking an expanded program of retirement benefits.
"in addition to" is an introductory phrase (ok)
"railroad employees" sounds like there are certain type of employees.
(E) In addition to the increase in hourly wages requested last July, the employees of the railroad are now seeking an expanded program of retirement benefits.
More crisp than (D). "Employees of the railroad" better.
SC01561.01