1) In addition to the inflation adjustment to be made to the monthly wages of employees in a firm

Fuzzy logic methods are also used in determining the increments.

The rules used are:

Rule 1: IF the payee is highly qualified AND has a high sense of responsibility AND

If it has brought new business areas to the company within the last year, THEN the paid

receives a high wage increase.

Rule 2: IF the payee has high qualifications AND is doing his job well, THEN

receives a paid middle wage increase.

Rule 3: IF the wage earner has low qualifications AND is not doing his job well, THEN

receives a low wage increase.

Two people working in this company have "high qualifications", "high sense of responsibility",

"has brought new business areas to the company", "does his job well", "low qualifications" and "does his job well".

does not do well" membership functions are listed in Table S1, low, medium, and high.

Membership functions for salary increases are given in Figure 1.

responsibility AND

If it has brought new business areas to the company within the last year, THEN the paid

receives a high wage increase.

Rule 2: IF the payee has high qualifications AND is doing his job well, THEN

receives a paid middle wage increase.

Rule 3: IF the wage earner has low qualifications AND is not doing his job well, THEN

receives a low wage increase.

Two people working in this company have "high qualifications", "high sense of responsibility",

"has brought new business areas to the company", "does his job well", "low qualifications" and "does his job well".

does not do well" membership functions are listed in Table S1, low, medium, and high.

Membership functions for salary increases are given in Figure 1.

Relevant inference and clarification of increases in the salaries of Mr. A and Mr. B.

Calculate using the rules.

TABLE S1 Degrees of belonging to membership functions. Mr. A 0.1 Mr. B 0.8 IF AND 0.1 0.6 AND 0.0 0.6 the payee has high qualifications high sense of responsibility new business areas to the firm during the past year if it earned set paid high wage increase THEN IF 0.1 0.8 AND he payee's qualifications are high does its job well he sets paid middle wage increase 0.5 0.8 THEN IF 0.9 0.2 AND the payee's qualifications are low not doing its job well get paid low wage increase 0.6 0.2 THEN LOW MEDIUM WAGE WAGE INCREASED INCREASED HIGH WAGE INCREASED 1.0 0.8 0.6 0.4 0.2 -20 20 60 100 140 TL/month Figure 1. Membership functions for pay rise levels. W