Employees at Silicon Valley giants Facebook and Apple are not short on generous perks: extended family leave, sleek onsite medical centers for employees, free massages and candy shops.

And now, up to $20,000 in coverage for egg freezing for non-medical reasons, allowing women to potentially press the pause button on their fertility. NBC News is reporting that Apple will begin offering the perk to employees in January under its fertility benefit. Facebook began offering the coverage in early 2014 as part of its surrogacy benefit.

The two tech giants appear to be the first major companies to do so for non-medical reasons. In a sign of its rarity, neither the Society of Human Resources Management nor the Families and Work Institute, a nonprofit that does research on workplace issues, have ever asked about egg freezing as a benefit in surveys.