The large majority of LH´s employees will be insured under the standard compulsory state pension system, in which the premium is a percentage of the employee´s gross salary and of which the employee pays half, while the employer pays the other half into the governmental pension funds. The contributions are deducted by the employer before he pays the net salary to the employee and are paid directly to the relevant pension fund. The liability of LH ends there.
Employees mikght have a supplemental company pension scheme as a perk, but since I haven´t worked for LH since a long time I don´t know any details. Generally with such schemes the employer pays a contribution to a private insurer (and can deduct this from his tax), who later will pay out the pensions.
Only top level employees will have their own, private pension plans.
The same applies to the medical insurance.