PARIS, Jan 7 (Reuters) - France's power and gas unions will call for strikes at French power groups Engie on Jan. 14 and at EDF on Jan. 19 if reorganisation plans are not withdrawn by next Wednesday, the CGT union said in a press release on Thursday.

These would be the fourth and fifth days of strike action since Dec. 10 at EDF over the Hercules restructuring plan.

Unions fear the reorganisation of state-owned EDF, which is the subject of negotiations between Paris and the European Union, would pave the way for the dismantling and privatisation of the group.

The CGT is also protesting against Engie's review of its activities, in which the group is considering a spin-off of some of its client solutions business.

The union's strike call also relates to smaller power supplier Gazel Energie, which is planning job cuts.

Unions had already issued a joint call for strike action at EDF on Jan. 19 over planned reforms. (Reporting by Forrest Crellin, additional reporting by Benjamin Mallet. Editing by Gus Trompiz and Mark Potter)