On 16 March 2023, Occupational Exposure Limits for Chemical Agents in Spain 2023 was published. The following substance was added to Table 1 (Environmental Limit Values):

1. Diesel Engine Emissions

Limits for the following substances in Table 1 were updated:

1. Cadmium and its inorganic compounds

2. Hardwoods, dust

3. Softwoods, dust

The following substance was removed from Table 1:

1. Gasoline

The following substance was added to Table 3 (Biological Limit Values):

1. 1,1,1-trichloroethane

Limits for the following substance in Table 3 were updated:

1. Methyl-n-butylketone