California Code, Public Resources Code - PRC § 5081

(a) The department has a proprietary and financial interest in revenue-generating commercial operations on state land, including the Old Sacramento State Historic Park.

(b) Labor disputes may interfere with or disrupt hotel and hospitality services and negatively impact the department's proprietary interests and its ability to attract travelers to the Old Sacramento State Historical Park.

(c) Requiring that the entity responsible for developing a hotel and hospitality operations in the Old Sacramento State Historical Park, as well as any subcontractors or sublessees, be party to a labor peace agreement prohibiting strikes, picketing, and boycotts at the hotel is a well established means of protecting those proprietary interests.