51.   The two sides have been battling over the use of mandatory overtime, wages and health insurance costs.

52.   Their complaints include mandatory overtime, no time off during the holidays, low job security and shift changes without notice.

53.   Those include the movement of work to areas of cheaper labor and mandatory overtime.

54.   To lure and retain workers, companies must offer perks like no mandatory overtime and the ability to set your own schedule, Hartmann said.