Section 4

For employees separated from service subsequent to June 30, 1970 who were in a welfare fund subject to the provisions of the above Sections 2 and 3 at the time of such separation, the Employer shall, subject to a signed separate agreement between the Employer and the Union, contribute to the Welfare Fund on the same contributory basis as incumbent employees.
The per annum contribution rates paid on behalf of employees separated from service to a welfare fund which covers such employees and the one-time lump sum payment (for such employees who are receiving benefits on July 31, 1999) shall be adjusted in the same manner as the per annum contribution rates for other employees are adjusted pursuant to Sections 2 and 3.
Contributions shall be made only for such time as said individuals remain primary beneficiaries of the New York City Employee Health Benefits Program and are entitled to benefits paid for by the Employer through such Program or are retirees of the New York City Employee's Retirement System who have completed at least five (5) years of full-time service with the City.