Definitions for "Break in service"
The length of time between the date an employee leaves a firm and the date the employee resumes working for that firm. For pension and employee benefit plan purposes in the United States, a plan participant cannot be deprived of benefits which accumulate before a break in service unless the break is longer than (a) five years or (b) the amount of time that the participant has been employed when the break commences, whichever is greater.----------[ Back
A calendar year, plan year or other consecutive 12-month period designated by the plan during which a plan participant does not complete more than 500 hours of service.
Any interruption or irregularity in your accumulation of pensionable service, for example: periods during which neither you nor your employer made contributions and no contributory service was accumulated, or periods when you worked less than full time, even though your employment contract was full time.