en.wikipedia.org/wiki/Le_Chapelier_Law_1791

This statement conflates two different legal milestones.

The official history page of the French National Assembly says that the law of 25 May 1864 authorized strikes "without violence" but that freedom of association was recognized only later: meeting rights in 1868 and association in 1884. In other words, the Ollivier law was a step toward labor freedoms, but it did not itself restore a general right to associate.

A separate official source, the text of the law of 21 March 1884 on professional unions (the Waldeck-Rousseau law), shows that 1884 is the key date for legally authorizing trade unions/professional syndicates. That is the law generally treated as establishing legal union organization in France.

So the article’s wording is inaccurate because it says the 1864 law reinstated both association and strike rights. The historical record supports a narrower claim: 1864 legalized strikes in limited form; 1884 legalized professional unions/association.

This wording overstates what happened in 1864.

An official Senate report explains that from 1791 until 1864, collective worker action was a criminal offense, and that 1864 brought only the abolition of the offense of coalition. The same official text adds that professional unions were legalized by the law of 21 March 1884 (Waldeck-Rousseau).

The French National Assembly’s historical page on the Second Empire says the law of 25 May 1864 authorized strikes without violence, but that freedom of association was recognized only later, in 1884. So it is inaccurate to say the Le Chapelier law was simply "annulled" in 1864. A more accurate summary is that 1864 partially dismantled its anti-strike provisions, while 1884 legalized unions and association.