Short answer. Usually yes, but not straight from the Labor Code itself. Article 132 directs the Secretary of Labor and Employment to set safety and health standards for women employees and, in appropriate cases, to require employers by regulation to provide these facilities. The duty bites through those regulations.
What the law says
To establish separate toilet rooms and lavatories for men and women and provide at least a dressing room for women
Labor Code, Article 132 — Facilities For Women Employees. Read the full provision →
How the article is built
Article 132 is an enabling provision. It says the Secretary of Labor and Employment shall establish standards that will ensure the safety and health of women employees, and that In appropriate cases, he shall, by regulations, require any employer to do four things: provide seats proper for women and permit their use, To establish separate toilet rooms and lavatories for men and women and provide at least a dressing room for women, to establish a nursery in the workplace, and to set minimum age and other standards for retirement or termination in special occupations such as flight attendants. So the entitlement is real, but its detail — who, how many, what specification — lives in the implementing standards rather than in the sentence itself.
The seats provision is more specific than people assume
The first item does two separate things. It requires the employer to provide seats proper for women, and it requires that the women be permitted to use those seats — both when free from work and during working hours, provided the duties can be performed seated without detriment to efficiency. That qualifier is the whole battleground in retail and service work. A seat placed in a stockroom that staff are discouraged from using does not satisfy the provision, because the permission to use it is part of the obligation. Equally, the article does not entitle anyone to sit through work that genuinely cannot be done sitting down.
What later statutes have added
The nursery item has been overtaken in practice by Republic Act No. 10028 (2009), the Expanded Breastfeeding Promotion Act, which requires workplaces to set up lactation stations with specified basic facilities and to grant lactation breaks. Occupational safety and health requirements generally, including sanitation and welfare facilities, are now enforced under Republic Act No. 11058 (2018), which strengthened compliance with occupational safety and health standards and attached administrative penalties for wilful failure. Read Article 132 together with those laws rather than on its own; the Code supplies the mandate, the later statutes supply much of the current content and the teeth.
If the facilities are not there
This is a labour standards matter rather than something you sue over individually, and it is usually raised first through the workplace safety and health committee or with management in writing. Where that goes nowhere, complaints about safety and health standards are handled by the Department of Labor and Employment through its inspection machinery, and a complaint may be lodged without waiting to resign. Keep dated notes and photographs of what is actually provided. Retaliating against an employee for raising a safety and health complaint is itself a separate wrong, so record any change in treatment that follows.