The equipment used in some welding techniques (e.g. tungsten inert gas alternating current welding or capacitor discharge stud welding) can induce high electromagnetic fields inside the operator due to the large time-varying electric currents involved in the process. The European Union (EU) Directive 2013/35/EU provides guidelines and recommendations to guarantee the security and health of the operator by means of two sets of limit values: Action Levels (ALs) and Exposure Limit Values (ELVs). These limits are based on recommendations from the International Commission on Non-Ionizing Radiation Protection (ICNIRP) and are found in the Control of Electromagnetic Fields at Work (CEMFAW) 2016 Regulations. In this paper we present a simplified methodology to calculate the ALs and ELVs. This methodology can be applied to any welding process that uses a time-varying electric current. The ALs and ELVs are obtained with the help of an in-house Python code and the open-source finite element software ERMES. The Python code applies the Weighted Peak Method (WPM) in frequency domain to measured current profiles and generates normalization constants that are used by ERMES to calculate the three-dimensional spatial distribution of ALs and ELVs. Finally, the three-dimensional maps obtained are used to assess the welding technique against the EU Directive 2013/35/EU.