In the US, unions are a major political donor and expend a lot of political capital on lobbying elected representatives. Are there countries where unions are banned from making any sort of donations and/or are not allowed to lobby politicians?
British Columbia, Canada
A ban on union and corporate donations to B.C. political parties and a cap on the amount individuals can give has hurt the provincial Liberals the most, a CBC News analysis has found.
The ban was introduced by the NDP government, with Green Party support, in November 2017.
Me? Totally happy to see unions banned from this. Corporations too.
Lobbying is still allowed. We've had lobbying questions before and the general consensus seemed to be that talking to your representative is a valid and necessary activity in a democracy.
Singapore. Political Donations Act 2000 Handbook (Jan 2021):
Trade unions, societies, charities and mutual benefit organisations are set up for specific purposes. These organisations are not permissible donors.
(Note that labour unions in Singapore are already under the complete control of the one-party state anyway.)
Quebec, Canada. Only individuals are allowed to give to a political party. Maximum 100$/year (200$ in election year). No company, corporation, union or any other organization is allowed to contribute to political parties. The state gives money according to what the parties have gathered and also according to votes in the last election.
Unions are not allowed to directly finance an electoral campaign in France. Article L52-8 of French electoral code:
Les personnes morales, à l'exception des partis ou groupements politiques, ne peuvent participer au financement de la campagne électorale d'un candidat
Juridical persons, except political parties or groupments, cannot contribute to the funding of a candidate's electoral campaign
Juridical persons in French law include Unions, companies, non-profit associations, corporations, art foundations, etc.
They can't give money to a politcal party either:
Depuis 1995, les personnes morales (entreprises, fondations...) ne peuvent pas financer un parti.
Since 1995, juridical persons (enterprises, foundations...) can't finance a [political] party.