More than 150 literary agents, whose clients include Danielle Jackson, V.E. Schwab and L.A. Chandlar, have signed an open letter to HarperCollins vowing to “omit” the publisher from upcoming book submissions until it reaches an agreement with striking employees, AP reports.

Around 250 entry- and mid-level staff members, from publicists to editorial assistants, have been on strike since Nov. 10, with the two sides differing over wages, workforce diversity and other issues that have become increasingly prominent across the industry.

No new talks are scheduled.”While many consider publishing to be a labor of love, we agents know how quickly that labor can lead to burnout, tension, missed opportunities for advancement, and mistakes,” the letter reads in part.

“This generation of rising publishing professionals must contend with student loan debt, the rising cost of living, and the barriers inherent in working long hours without adequate compensation.

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