As winter prepares to take hold in North America, national labor and employment firm Littler Mendelson is setting its sights on warmer climes.

The San Francisco–based Am Law 100 firm, which has roughly 1,000 lawyers in the United States, announced Monday that it will absorb 22-lawyer Puerto Rican firm Schuster Aguilo into its Littler Global network as of Jan. 1. The move marks the firm’s latest effort to expand its presence in Latin America.