Short answer. In most workplaces, yes, but the duty no longer rests on the Labor Code article people usually quote. Occupational safety and health standards under Republic Act No. 11058 (2018) now govern workplace facilities, and Republic Act No. 10028 (2009) separately requires lactation stations and breaks.
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 →
What the old article said
Article 132 of the Labor Code told the labour department to set standards for the safety and health of women employees and, in appropriate cases, to require an employer by regulation To establish separate toilet rooms and lavatories for men and women and provide at least a dressing room for women. The same article mentioned seats for women workers and a nursery in the workplace. That article no longer states the whole of the duty. Republic Act No. 11058 (2018) governs occupational safety and health standards and their enforcement, and Republic Act No. 10028 (2009) governs lactation stations and breaks. The Code text is kept for reference.
Where the requirement actually sits now
Sanitary facilities are part of occupational safety and health. Under Republic Act No. 11058 employers carry a duty to comply with the safety and health standards issued for workplaces, and those standards, rather than the words of the old article, are what an inspector measures a workplace against. The Act also gives the labour department real enforcement powers, including inspection and orders, which the earlier framework largely lacked. So the practical answer to a missing or shared facility is usually found in the safety and health standards and their enforcement machinery, not in an article that only directed regulations to be written.
The nursery has become something more specific
The old article's reference to a nursery has been overtaken by a dedicated statute. Republic Act No. 10028 deals with lactation stations in the workplace and with lactation breaks for nursing employees, and sets out what a station must be and how the entitlement works. That is a considerably more concrete right than the general power the Code article described. If you are returning to work while breastfeeding, that Act, not the Labor Code article, is the one to read, and it is the one an employer should be answering to when asked what provision has been made.
If the facilities are inadequate
Raise it first as a safety and health matter internally, in writing, and keep a copy: what is missing, how many employees are affected, and what has been asked for. Photographs and dates help. Where an internal request goes nowhere, the enforcement route lies through the occupational safety and health framework under Republic Act No. 11058 rather than through the repealed language of the Code. This page is general legal information about which law now imposes the duty, not advice on a particular workplace, and it does not promise any result from a complaint.