9 Personnel expense

In CHF million   2016   2015
Salary and wage costs   2,268   2,295
Social security expenses   253   257
Expense of defined benefit plans. See Note 10.   338   320
Expense of defined contribution plans. See Note 10.   9   9
Expense of share-based payments. See Note 11.   3   2
Salary and wage costs of the employment company Worklink   3   4
Termination benefits   20   67
Other personnel expense   53   65
Total personnel expense   2,947   3,019

Termination benefit programmes

­Swisscom supports employees affected by downsizing through a social plan. Depending on the relevant social plan as well as age and length of service, certain employees affected by downsizing may transfer to the employment company Worklink AG. The employment company Worklink AG hires out participating employees to third parties on a temporary basis. For further information, see Note 28.